148-550: James Backhouse (8 July 1794 – 20 January 1869) was a botanist and missionary for the Quaker church in Australia. His son, also James Backhouse (1825–1890), was also a botanist. James Backhouse was born in 1794, the fourth child of James and Mary Backhouse a Quaker business family of Darlington , County Durham, England. He was the third after his father and grandfather to be called James Backhouse. His grandfather died as
296-485: A 244-metre (801 ft) office building for Anglo-Australian mining company BHP . Perth's metropolitan area extends along the coast to Two Rocks in the north and Singleton to the south, a distance of approximately 125 kilometres (80 mi). From the coast in the west to Mundaring in the east is a distance of approximately 50 kilometres (30 mi). The Perth metropolitan area covers 6,418 square kilometres (2,478 sq mi). The built-up urban area of Perth
444-647: A Quaker prisoner and martyr at Lancaster Castle in 1697. His father, James, (together with his father and brother), founded the Backhouse's Bank in Darlington. His mother was Mary Dearman of Thorne , Yorkshire, also a devout Quaker. His father died when he was a child and his mother brought him up in a religious atmosphere. He was educated in Leeds and began work in a grocery, drug and chemical business, but he developed tuberculosis and became too delicate to pursue
592-472: A ban that lasted until 1954. In 1933, two-thirds of Western Australians voted in a referendum to secede from the Australian Federation . However, the state general election held at the same time as the referendum had voted out the incumbent "pro-independence" government, replacing it with a government that did not support the independence movement. Respecting the result of the referendum,
740-490: A botanically and pharmacologically important herbal Historia Plantarum in 1544 and a pharmacopoeia of lasting importance, the Dispensatorium in 1546. Naturalist Conrad von Gesner (1516–1565) and herbalist John Gerard (1545– c. 1611 ) published herbals covering the supposed medicinal uses of plants. Naturalist Ulisse Aldrovandi (1522–1605) was considered the father of natural history , which included
888-1025: A commemorative plaque was unveiled at 92 Micklegate, York, once the home of the Backhouse brothers, and now of the York Conservation Trust. This was the result of a collaboration between the York Civic Trust, The York Conservation Trust , and the Yorkshire Gardens Trust. From 1859, he lived at Holgate House . James Backhouse was the third of five consecutive generations named James Backhouse, so they are also often mentioned with generational suffix ordinals: After his return from Australia in 1841, James (3) made trips to Norway, to do his missionary work, but also to collect plants, together with his son James (4). Botanist Botany , also called plant science (or plant sciences ), plant biology or phytology ,
1036-414: A considerable problem in agriculture, and the biology and control of plant pathogens in agriculture and natural ecosystems . Ethnobotany is the study of the relationships between plants and people. When applied to the investigation of historical plant–people relationships ethnobotany may be referred to as archaeobotany or palaeoethnobotany . Some of the earliest plant-people relationships arose between
1184-452: A continuum between the major morphological categories of root, stem (caulome), leaf (phyllome) and trichome . Furthermore, it emphasises structural dynamics. Modern systematics aims to reflect and discover phylogenetic relationships between plants. Modern Molecular phylogenetics largely ignores morphological characters, relying on DNA sequences as data. Molecular analysis of DNA sequences from most families of flowering plants enabled
1332-433: A convict-supported settlement at King George's Sound (later Albany ) on the south coast of Western Australia in 1826, responding to rumours of potential French annexation, Perth marked the first comprehensive European settlement in the western third of the continent of Australia in 1829. Officially designated as "Western Australia" in 1832, the colony retained the informal moniker "Swan River Colony" for many years, after
1480-401: A crowd at York racecourse , which his sister Sarah put at two thousand, on 'the iniquity of the frivolities in which they were engaged, and to call their attention to the weightier concerns of eternity' (York Courant, 9 August 1825). In December 1827, the wives of both brothers died, James being left with a son and a daughter. In September 1831, Backhouse sailed for Australia on a mission to
1628-510: A diverse influx of people, including Italians , Greeks , Dutch , Germans , Turks , Croats , and Macedonians . The Italian influence in the Perth and Fremantle area has been substantial, evident in places like the "Cappuccino strip" in Fremantle featuring many Italian eateries and shops. In Fremantle, the traditional Italian blessing of the fleet festival is held every year at the start of
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#17327805254121776-585: A few people could be gathered together to hear them. In South Africa they also visited prisons including Robben Island and in more than 19 months and 6000 miles on wagon and horseback he learnt languages including Afrikaans so he could speak to the local populations, attended Quaker meetings, temperance meetings and non-Quaker meetings, and set up a multi-racial school for the poor in Cape Town with money sent by English Friends. On his travels, James Backhouse also collected plants and seeds which he sent back to
1924-640: A founding state of Australia". It was the last of the Australian colonies to agree to join the Federation, and it did so only after the other colonies had offered several concessions, including the construction of a transcontinental railway line from Port Augusta in South Australia to Kalgoorlie to link Perth with the eastern states. In 1927, Indigenous people were prohibited from entering large swathes of Perth under penalty of imprisonment,
2072-400: A hierarchical classification of plant species that remains the reference point for modern botanical nomenclature . This established a standardised binomial or two-part naming scheme where the first name represented the genus and the second identified the species within the genus. For the purposes of identification, Linnaeus's Systema Sexuale classified plants into 24 groups according to
2220-680: A pattern of development less in line with the British experience and more in line with North America. This was encouraged by the opening of the Narrows Bridge and the gradual closure of the Perth-Fremantle Tramways . The mining-pastoral boom of the 1960s only accelerated the pace of urban growth in Perth. In 1962, Perth received global media attention when city residents lit their house lights and streetlights as American astronaut John Glenn passed overhead while orbiting
2368-404: A plant sucks water through them under water stress. Lignin is also used in other cell types like sclerenchyma fibres that provide structural support for a plant and is a major constituent of wood. Sporopollenin is a chemically resistant polymer found in the outer cell walls of spores and pollen of land plants responsible for the survival of early land plant spores and the pollen of seed plants in
2516-552: A polymer of fructose is used for the same purpose in the sunflower family Asteraceae . Some of the glucose is converted to sucrose (common table sugar) for export to the rest of the plant. Unlike in animals (which lack chloroplasts), plants and their eukaryote relatives have delegated many biochemical roles to their chloroplasts , including synthesising all their fatty acids , and most amino acids . The fatty acids that chloroplasts make are used for many things, such as providing material to build cell membranes out of and making
2664-447: A population of more than 100,000 is Adelaide , over 2,100 km (1,305 mi) away. Perth is geographically closer to both East Timor (2,800 km or 1,700 mi), and Jakarta , Indonesia (3,000 km or 1,900 mi), than to Sydney (3,300 km or 2,100 mi). Perth is Australia's fourth-most-populous city, having overtaken Adelaide in 1984. In June 2023 there was an estimated resident population of 2,309,338 in
2812-464: A process that generates molecular oxygen (O 2 ) as a by-product. The light energy captured by chlorophyll a is initially in the form of electrons (and later a proton gradient ) that's used to make molecules of ATP and NADPH which temporarily store and transport energy. Their energy is used in the light-independent reactions of the Calvin cycle by the enzyme rubisco to produce molecules of
2960-505: A pure form of carbon made by pyrolysis of wood, has a long history as a metal- smelting fuel, as a filter material and adsorbent and as an artist's material and is one of the three ingredients of gunpowder . Cellulose , the world's most abundant organic polymer, can be converted into energy, fuels, materials and chemical feedstock. Products made from cellulose include rayon and cellophane , wallpaper paste , biobutanol and gun cotton . Sugarcane , rapeseed and soy are some of
3108-830: A reading room at a nonconformist chapel in Upper Teesdale . He visited Norway in 1851, 1853 and 1860, holding more than 200 meetings in 1853 and 1860. In 1862 he held over 40 meetings throughout Great Britain and in 1865, aged over 70, there were 53 public meetings at which he exhorted Friends to turn against pomp and parade, the lures of honorific office, elegant or ornamental clothing and using heathen names of days and months. Backhouse maintained his evangelical work all his life, travelling and preaching much in England, Scotland and Ireland. Among his published works, Backhouse wrote or edited "A memoir of Deborah Backhouse of York" (1828), "Memoirs of Francis Howgill" (1828), "Extracts from
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#17327805254123256-806: A sedentary occupation. Coming from a family of botanists, he was encouraged to spend time in the open air and study botany. An uncle helped him in this and he made botanical trips to Upper Teesdale with the Durham lead miner, John Binks (1766–1817) who is credited with the discovery of many of the area's rare plants. Binks was a major influence, as was the Newcastle botanist, Nathaniel John Winch , and William Jackson Hooker (1785–1865). James then spent two years as an apprentice at Wagstaffe's nursery in Tivetshall, near Norwich, and where he first conceived of 'a gospel errand into Australia' believing strongly that this
3404-485: A small area around the central business district. Substantial population growth occurred during the late 19th-century Western Australian gold rushes , and the city has continued to expand, particularly after World War II due to a high net migration rate . Post-war immigrants were predominantly from the British Isles and Southern Europe, while more recent arrivals see a growing population of Asian descent. During
3552-536: A student of Aristotle who invented and described many of its principles and is widely regarded in the scientific community as the "Father of Botany". His major works, Enquiry into Plants and On the Causes of Plants , constitute the most important contributions to botanical science until the Middle Ages , almost seventeen centuries later. Another work from Ancient Greece that made an early impact on botany
3700-450: A substantial number of Parsees who emigrated from Bombay – Perth being the closest Australian city to India – in 2021 those with Indian ancestry accounted for 3.5% of Perth's population Perth is also home to the largest population of Anglo-Burmese in the world; many settled here following the independence of Burma in 1948 with immigration taking off after 1962. The city is now the cultural hub for Anglo-Burmese worldwide. There
3848-460: A useful proxy for temperature in historical climatology , and the biological impact of climate change and global warming . Palynology , the analysis of fossil pollen deposits in sediments from thousands or millions of years ago allows the reconstruction of past climates. Estimates of atmospheric CO 2 concentrations since the Palaeozoic have been obtained from stomatal densities and
3996-1010: A variety of spatial scales in groups, populations and communities that collectively constitute vegetation. Regions with characteristic vegetation types and dominant plants as well as similar abiotic and biotic factors, climate , and geography make up biomes like tundra or tropical rainforest . Herbivores eat plants, but plants can defend themselves and some species are parasitic or even carnivorous . Other organisms form mutually beneficial relationships with plants. For example, mycorrhizal fungi and rhizobia provide plants with nutrients in exchange for food, ants are recruited by ant plants to provide protection, honey bees , bats and other animals pollinate flowers and humans and other animals act as dispersal vectors to spread spores and seeds . Plant responses to climate and other environmental changes can inform our understanding of how these changes affect ecosystem function and productivity. For example, plant phenology can be
4144-628: A way of drug discovery . Plants can synthesise coloured dyes and pigments such as the anthocyanins responsible for the red colour of red wine , yellow weld and blue woad used together to produce Lincoln green , indoxyl , source of the blue dye indigo traditionally used to dye denim and the artist's pigments gamboge and rose madder . Sugar, starch , cotton, linen , hemp , some types of rope , wood and particle boards , papyrus and paper, vegetable oils , wax , and natural rubber are examples of commercially important materials made from plant tissues or their secondary products. Charcoal ,
4292-456: A wider range of shared characters and were widely followed. The Candollean system reflected his ideas of the progression of morphological complexity and the later Bentham & Hooker system , which was influential until the mid-19th century, was influenced by Candolle's approach. Darwin 's publication of the Origin of Species in 1859 and his concept of common descent required modifications to
4440-406: Is De materia medica , a five-volume encyclopedia about preliminary herbal medicine written in the middle of the first century by Greek physician and pharmacologist Pedanius Dioscorides . De materia medica was widely read for more than 1,500 years. Important contributions from the medieval Muslim world include Ibn Wahshiyya 's Nabatean Agriculture , Abū Ḥanīfa Dīnawarī 's (828–896)
4588-405: Is peppermint , Mentha × piperita , a sterile hybrid between Mentha aquatica and spearmint, Mentha spicata . The many cultivated varieties of wheat are the result of multiple inter- and intra- specific crosses between wild species and their hybrids. Angiosperms with monoecious flowers often have self-incompatibility mechanisms that operate between the pollen and stigma so that
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4736-481: Is 1,722 square kilometres (665 sq mi), the same as Wuhan or Salt Lake City and slightly smaller than London , making Perth the 67th largest urban area in the world. Perth is also the 50th least densely populated out of the 990 urban areas in the world with a population above 500,000. The metropolitan region is defined by the Planning and Development Act 2005 to include 30 local government areas , with
4884-524: Is 8.8 °C (47.8 °F) on 26 June 1956. It occasionally gets cold enough for frost to form. While snow has never been recorded in the Perth CBD, light snowfalls have been reported in outer suburbs of Perth in the Perth Hills around Kalamunda , Roleystone and Mundaring . The most recent snowfall was in 1968. The rainfall pattern has changed in Perth and southwest Western Australia since
5032-476: Is a broad, multidisciplinary subject with contributions and insights from most other areas of science and technology. Research topics include the study of plant structure , growth and differentiation, reproduction , biochemistry and primary metabolism , chemical products, development , diseases , evolutionary relationships , systematics , and plant taxonomy . Dominant themes in 21st-century plant science are molecular genetics and epigenetics , which study
5180-460: Is also a substantial Anglo-Indian population in Perth, who also settled in the city following the independence of India. At the 2021 census, 2% of Perth's population identified as being Aboriginal and/or Torres Strait Islander . At the 2021 census, 74% of inhabitants spoke only English at home, with the next most common languages being Mandarin (2.3%), Italian (1.1%), Vietnamese (1.0%), Punjabi (0.9%) and Cantonese (0.9%). 41.8% of
5328-762: Is gathered by ethnobotanists. This information can relay a great deal of information on how the land once was thousands of years ago and how it has changed over that time. The goals of plant ecology are to understand the causes of their distribution patterns, productivity, environmental impact, evolution, and responses to environmental change. Plants depend on certain edaphic (soil) and climatic factors in their environment but can modify these factors too. For example, they can change their environment's albedo , increase runoff interception, stabilise mineral soils and develop their organic content, and affect local temperature. Plants compete with other organisms in their ecosystem for resources. They interact with their neighbours at
5476-704: Is on generally flat, rolling land, largely due to the high amount of sandy soils and deep bedrock . The Perth metropolitan area has two major river systems, one made up of the Swan and Canning Rivers, and one of the Serpentine and Murray Rivers, which discharge into the Peel Inlet at Mandurah . The Perth-Gingin Shrublands and Woodlands and Banksia Woodlands of the Swan Coastal Plain straddle
5624-451: Is still a major foundation of modern botany. Her books Plant Anatomy and Anatomy of Seed Plants have been key plant structural biology texts for more than half a century. The discipline of plant ecology was pioneered in the late 19th century by botanists such as Eugenius Warming , who produced the hypothesis that plants form communities , and his mentor and successor Christen C. Raunkiær whose system for describing plant life forms
5772-400: Is still given to these groups by botanists, and fungi (including lichens) and photosynthetic protists are usually covered in introductory botany courses. Palaeobotanists study ancient plants in the fossil record to provide information about the evolutionary history of plants . Cyanobacteria , the first oxygen-releasing photosynthetic organisms on Earth, are thought to have given rise to
5920-444: Is still in use today. The concept that the composition of plant communities such as temperate broadleaf forest changes by a process of ecological succession was developed by Henry Chandler Cowles , Arthur Tansley and Frederic Clements . Clements is credited with the idea of climax vegetation as the most complex vegetation that an environment can support and Tansley introduced the concept of ecosystems to biology. Building on
6068-932: Is the fourth most populous city in Australia , with a population of over 2.3 million within Greater Perth as of 2023 . It is part of the South West Land Division of Western Australia, with most of Perth's metropolitan area on the Swan Coastal Plain between the Indian Ocean and the Darling Scarp . The city has expanded outward from the original British settlements on the Swan River , upon which its central business district and port of Fremantle are situated. Perth
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6216-502: Is the science of plant life and a branch of biology . A botanist , plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word botanē ( βοτάνη ) meaning " pasture ", " herbs " " grass ", or " fodder "; Botanē is in turn derived from boskein ( Greek : βόσκειν ), "to feed" or "to graze ". Traditionally, botany has also included
6364-498: Is the study of ferns and allied plants. A number of other taxa of ranks varying from family to subgenus have terms for their study, including agrostology (or graminology) for the study of grasses, synantherology for the study of composites, and batology for the study of brambles. Study can also be divided by guild rather than clade or grade . Dendrology is the study of woody plants. Many divisions of biology have botanical subfields. These are commonly denoted by prefixing
6512-660: Is within the traditional territory of the Mooro , a Noongar clan, led by Yellagonga at the time of the British settlement. The Mooro was one of several Noongar clans based around the Swan River, known collectively as the Whadjuk . The Whadjuk themselves were one of a larger group of fourteen tribes that formed the south-west socio-linguistic block known as the Noongar (meaning 'the people' in their language ), also sometimes called
6660-564: The Angiosperm Phylogeny Group to publish in 1998 a phylogeny of flowering plants, answering many of the questions about relationships among angiosperm families and species. The theoretical possibility of a practical method for identification of plant species and commercial varieties by DNA barcoding is the subject of active current research. Botany is divided along several axes. Some subfields of botany relate to particular groups of organisms. Divisions related to
6808-822: The Australian Bureau of Statistics ' Perth (Major Statistical Division). The metropolitan extent of Perth can be defined in other ways – the Australian Bureau of Statistics Greater Capital City Statistical Area, or Greater Perth in short, consists of that area, plus the City of Mandurah and the Pinjarra Level 2 Statistical Area of the Shire of Murray , while the Regional Development Commissions Act 1993 includes
6956-612: The Australian Institute of Architects , and Colorbond . St Georges Terrace is the area's prominent street, with a large amount of office space in the CBD. Hay Street and Murray Street have most of the retail and entertainment facilities. The city's tallest building is Central Park , the twelfth tallest building in Australia . The CBD until 2012 was the centre of a mining-induced boom, with several commercial and residential projects being built, including Brookfield Place ,
7104-499: The Book of Plants , and Ibn Bassal 's The Classification of Soils . In the early 13th century, Abu al-Abbas al-Nabati , and Ibn al-Baitar (d. 1248) wrote on botany in a systematic and scientific manner. In the mid-16th century, botanical gardens were founded in a number of Italian universities. The Padua botanical garden in 1545 is usually considered to be the first which is still in its original location. These gardens continued
7252-594: The British House of Commons , Sir George Murray . Murray's association with the city was included in Stirling's proclamation of the colony, read in Fremantle on 18 June 1829, which concluded with the statement, "Given under my hand and Seal at Perth this 18th Day of June 1829. James Stirling Lieutenant Governor". The only contemporary information on the source of the name comes from Charles Fremantle 's diary entry for 12 August 1829, which records that they "named
7400-417: The C 4 carbon fixation pathway for photosynthesis which avoid the losses resulting from photorespiration in the more common C 3 carbon fixation pathway. These biochemical strategies are unique to land plants. Phytochemistry is a branch of plant biochemistry primarily concerned with the chemical substances produced by plants during secondary metabolism . Some of these compounds are toxins such as
7548-737: The Perth Mint . The city is served by Fremantle Harbour and Perth Airport . It was a naval base for the Allies during World War II and today, the Royal Australian Navy 's Fleet Base West is located on Garden Island . All five of Western Australia's universities are based in Perth. The name of the city is taken from Perth, Scotland in honour of the Secretary of State for War and the Colonies , and Member for Perthshire in
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#17327805254127696-458: The Shire of Serpentine-Jarrahdale in the Peel region . The largest river flowing through Perth is the Swan River, named for the native black swans by Willem de Vlamingh , captain of a Dutch expedition and namer of WA's Rottnest Island , who discovered the birds while exploring the area in 1697. This water body is also known as Derbarl Yerrigan . The city centre and most of the suburbs are on
7844-904: The Western Australian Government and the South West Aboriginal Land and Sea Council negotiated the South West Native Title Settlement. This settlement, including the Whadjuk Indigenous Land Use Agreement over the Perth region, was finalised by the Federal Court on 1 December 2021. As part of this agreement, the Noongar (Koorah, Nitja, Boordahwan) (Past, Present, Future) Recognition Act was passed in 2016, officially recognising
7992-504: The alkaloid coniine from hemlock . Others, such as the essential oils peppermint oil and lemon oil are useful for their aroma, as flavourings and spices (e.g., capsaicin ), and in medicine as pharmaceuticals as in opium from opium poppies . Many medicinal and recreational drugs , such as tetrahydrocannabinol (active ingredient in cannabis ), caffeine , morphine and nicotine come directly from plants. Others are simple derivatives of botanical natural products. For example,
8140-565: The auxin plant hormones by Kenneth V. Thimann in 1948 enabled regulation of plant growth by externally applied chemicals. Frederick Campion Steward pioneered techniques of micropropagation and plant tissue culture controlled by plant hormones . The synthetic auxin 2,4-dichlorophenoxyacetic acid or 2,4-D was one of the first commercial synthetic herbicides . 20th century developments in plant biochemistry have been driven by modern techniques of organic chemical analysis , such as spectroscopy , chromatography and electrophoresis . With
8288-626: The cell theory with Theodor Schwann and Rudolf Virchow and was among the first to grasp the significance of the cell nucleus that had been described by Robert Brown in 1831. In 1855, Adolf Fick formulated Fick's laws that enabled the calculation of the rates of molecular diffusion in biological systems. Building upon the gene-chromosome theory of heredity that originated with Gregor Mendel (1822–1884), August Weismann (1834–1914) proved that inheritance only takes place through gametes . No other cells can pass on inherited characters. The work of Katherine Esau (1898–1997) on plant anatomy
8436-444: The cellulose and lignin used to build their bodies, and secondary products like resins and aroma compounds . Plants and various other groups of photosynthetic eukaryotes collectively known as " algae " have unique organelles known as chloroplasts . Chloroplasts are thought to be descended from cyanobacteria that formed endosymbiotic relationships with ancient plant and algal ancestors. Chloroplasts and cyanobacteria contain
8584-427: The indigenous people of Canada in identifying edible plants from inedible plants. This relationship the indigenous people had with plants was recorded by ethnobotanists. Plant biochemistry is the study of the chemical processes used by plants. Some of these processes are used in their primary metabolism like the photosynthetic Calvin cycle and crassulacean acid metabolism . Others make specialised materials like
8732-426: The pines , and flowering plants ) and the free-sporing cryptogams including ferns , clubmosses , liverworts , hornworts and mosses . Embryophytes are multicellular eukaryotes descended from an ancestor that obtained its energy from sunlight by photosynthesis . They have life cycles with alternating haploid and diploid phases. The sexual haploid phase of embryophytes, known as the gametophyte , nurtures
8880-548: The 1920s. Successive state governments, beginning with the Willcock Labor Government (1936–1945), determined to change this. Planning for post-war economic development was initially driven by Russell Dumas , who as Director of Public Works (1941–1953) drew up plans for Western Australia's major post-war public-works projects, including the raising of the Mundaring and Wellington dams, the development of
9028-408: The 3-carbon sugar glyceraldehyde 3-phosphate (G3P). Glyceraldehyde 3-phosphate is the first product of photosynthesis and the raw material from which glucose and almost all other organic molecules of biological origin are synthesised. Some of the glucose is converted to starch which is stored in the chloroplast. Starch is the characteristic energy store of most land plants and algae, while inulin ,
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#17327805254129176-656: The Bibbulmun. On 19 September 2006, the Federal Court of Australia ruled in the case of Bennell v State of Western Australia [2006] FCA 1243 that Noongar native title persisted over Perth metropolitan area. An appeal was subsequently filed, and in 2008, the Full Court of the Federal Court upheld parts of the appeal by the Western Australian and Commonwealth governments. Following this appeal,
9324-517: The Candollean system to reflect evolutionary relationships as distinct from mere morphological similarity. Botany was greatly stimulated by the appearance of the first "modern" textbook, Matthias Schleiden 's Grundzüge der Wissenschaftlichen Botanik , published in English in 1849 as Principles of Scientific Botany . Schleiden was a microscopist and an early plant anatomist who co-founded
9472-633: The Earth on Friendship 7 . This led to its being nicknamed the "City of Light". The city repeated the act as Glenn passed overhead on the Space Shuttle in 1998. Perth's development and relative prosperity, especially since the mid-1960s, has resulted from its role as the main service centre for the state's resource industries, which extract gold, iron ore, nickel, alumina, diamonds, mineral sands, coal, oil, and natural gas. Whilst most mineral and petroleum production takes place elsewhere in
9620-502: The Greater Perth area, representing an increase of approximately 3.6% from the 2022 estimate of 2,228,020, the highest growth rate of Australia's capital cities. At the 2021 census, the most commonly nominated ancestries were: Perth's population is notable for the high proportion of British- and Irish-born residents. At the 2021 Census, 169,938 England-born Perth residents were counted, ahead of even Sydney (151,614), despite
9768-465: The Letters of James Backhouse" (1838–41), "The life and correspondence of William and Alice Ellis" (1849), "A short record of the life and experiences of Thomas Bulman" (1851), and numerous sermons, addresses and tracts. With Charles Tylor he wrote "The life and labours of George Washington Walker" (1862). James Backhouse was honoured by having the plant genus Backhousia named after him. In 2017
9916-518: The Noongar people and the Europeans arose due to these events. Agricultural development on the land restricted the traditional hunter-gatherer practices of the native Whadjuk Noongar, compelling them to camp in designated areas, including swamps and lakes north of the European settlement. Third Swamp , known to them as Boodjamooling , remained a primary campsite for the remaining Noongar people in
10064-473: The Noongar people as the traditional owners of the south-west region of Western Australia. On 10 January 1697, Dutch Captain Willem de Vlamingh conducted the first documented exploration by a European of the present-day Perth region. His crew initially explored the area on foot, leading them to what is now central Perth. Continuing, they travelled up the Swan River in search of native inhabitants. They named
10212-475: The Noongar people escalated due to conflicting land-value systems and increased land use as the colony expanded. These confrontations resulted in multiple events, including the murder of settlers (such as Thomas Peel 's servant Hugh Nesbitt ), the execution without trial of Whadjuk elder Midgegooroo , the killing of his son Yagan in 1833, and the Pinjarra massacre in 1834. The strained relations between
10360-410: The Perth area for at least 48,000 years; according to Noongar tradition, they have occupied the area since "time immemorial". Noongar country encompasses the southwest corner of Western Australia, with particular significance attached to the wetlands on the Swan Coastal Plain , both spiritually (featuring in local mythology ) and as a source of food. The current central business district location
10508-400: The Perth region, also accommodating travellers, itinerants, and homeless individuals. During the gold rush in the 1890s, miners on their way to the goldfields joined this community. In 1850, at a time when penal transportation to Australia's eastern colonies had ceased, Western Australia was opened to convicts at the request of farming and business people due to a shortage of labour. Over
10656-482: The Vegetable Kingdom at the start of chapter XII noted "The first and most important of the conclusions which may be drawn from the observations given in this volume, is that generally cross-fertilisation is beneficial and self-fertilisation often injurious, at least with the plants on which I experimented." An important adaptive benefit of outcrossing is that it allows the masking of deleterious mutations in
10804-733: The York nursery, to Kew Gardens , and to Professor William Hooker , Professor of Botany at Glasgow. His works published on his return, "A narrative visit to the Australian colonies" (1843) and "A narrative visit to the Mauritius and South Africa" (1844) are detailed accounts of his travels with engravings from his original sketches of indigenous vegetation, aborigines, chain gangs of prisoners, and numerous missionary stations, with appendices of letters sent to officials, Christian evangelical writings and speeches. Backhouse returned to England and arrived at London on 15 February 1841. In York, his safe return
10952-412: The above pair of categories gives rise to fields such as bryogeography (the study of the distribution of mosses). Different parts of plants also give rise to their own subfields, including xylology , carpology (or fructology) and palynology , these been the study of wood, fruit and pollen/spores respectively. Botany also overlaps on the one hand with agriculture, horticulture and silviculture, and on
11100-439: The ancestor of plants by entering into an endosymbiotic relationship with an early eukaryote, ultimately becoming the chloroplasts in plant cells. The new photosynthetic plants (along with their algal relatives) accelerated the rise in atmospheric oxygen started by the cyanobacteria , changing the ancient oxygen-free, reducing , atmosphere to one in which free oxygen has been abundant for more than 2 billion years. Among
11248-517: The area's major watercourse. On 4 June 1829, newly arriving British colonists had their first view of the mainland. Captain James Stirling, aboard Parmelia , noted that the site was "as beautiful as anything of this kind I had ever witnessed". On 12 August that year, Helen Dance, wife of the captain of the second ship, Sulphur , felled a tree to commemorate the town's founding. From 1831 onward, confrontations between British settlers and
11396-447: The base of most food chains because they use the energy from the sun and nutrients from the soil and atmosphere, converting them into a form that can be used by animals. This is what ecologists call the first trophic level . The modern forms of the major staple foods , such as hemp , teff , maize, rice, wheat and other cereal grasses, pulses , bananas and plantains, as well as hemp , flax and cotton grown for their fibres, are
11544-500: The blue-green pigment chlorophyll a . Chlorophyll a (as well as its plant and green algal-specific cousin chlorophyll b ) absorbs light in the blue-violet and orange/red parts of the spectrum while reflecting and transmitting the green light that we see as the characteristic colour of these organisms. The energy in the red and blue light that these pigments absorb is used by chloroplasts to make energy-rich carbon compounds from carbon dioxide and water by oxygenic photosynthesis ,
11692-446: The broader historical sense of botany include bacteriology , mycology (or fungology) and phycology - the study of bacteria, fungi and algae respectively - with lichenology as a subfield of mycology. The narrower sense of botany in the sense of the study of embryophytes (land plants) is disambiguated as phytology. Bryology is the study of mosses (and in the broader sense also liverworts and hornworts). Pteridology (or filicology)
11840-457: The characters may be artificial in keys designed purely for identification ( diagnostic keys ) or more closely related to the natural or phyletic order of the taxa in synoptic keys. By the 18th century, new plants for study were arriving in Europe in increasing numbers from newly discovered countries and the European colonies worldwide. In 1753, Carl Linnaeus published his Species Plantarum ,
11988-541: The city's population. These are supported by the Australian Eurasian Association of Western Australia, which also serves a community of Portuguese-Malacca Eurasian or Kristang immigrants. Middle Eastern immigrants have a presence in Perth. They come from a variety of countries, including Saudi Arabia , Syria , Iran , Iraq , Israel , Lebanon , The United Arab Emirates , Oman , Yemen , and Afghanistan . The Indian community includes
12136-416: The convicts and settlers. In this venture he had the support of the monthly meeting and of his brother, Thomas, also a devout Quaker, who believed evangelising took precedence over business, and who therefore looked after the business on his behalf. The initial journey took five months. His Quaker ministry, assisted by his companion and secretary, George Washington Walker (1800–1859), began immediately with
12284-543: The crew which was prone to drunkenness and violence. The missionaries arrived at Hobart in February 1832, and they spent the next six years journeying all over the then settled districts of Tasmania , New South Wales , and as far north as the site of Brisbane . They visited Port Phillip in 1837, and the states of South Australia and Western Australia just before they left. They visited penal settlements working for and interceding for prisoners, and deeply concerned by
12432-570: The cruelty and rigours they found. They wrote to Elizabeth Fry about the condition of women prisoners on ships and to the Governor of Van Diemen's Land on the prisons. Death of prisoners was often by murder from other prisoners in appalling conditions. Backhouse and Walker issued a lengthy address to the prison population of New South Wales and Van Diemen's Land pleading for prisoners to find salvation in religion. They were tireless campaigners for temperance and thrift. A third of wages paid in spirits
12580-461: The developing diploid embryo sporophyte within its tissues for at least part of its life, even in the seed plants, where the gametophyte itself is nurtured by its parent sporophyte. Other groups of organisms that were previously studied by botanists include bacteria (now studied in bacteriology ), fungi ( mycology ) – including lichen -forming fungi ( lichenology ), non- chlorophyte algae ( phycology ), and viruses ( virology ). However, attention
12728-463: The earliest was the Padua botanical garden . These gardens facilitated the academic study of plants. Efforts to catalogue and describe their collections were the beginnings of plant taxonomy and led in 1753 to the binomial system of nomenclature of Carl Linnaeus that remains in use to this day for the naming of all biological species. In the 19th and 20th centuries, new techniques were developed for
12876-419: The efforts of early humans to identify – and later cultivate – plants that were edible, poisonous, and possibly medicinal, making it one of the first endeavours of human investigation. Medieval physic gardens , often attached to monasteries , contained plants possibly having medicinal benefit. They were forerunners of the first botanical gardens attached to universities , founded from the 1540s onwards. One of
13024-453: The extensive earlier work of Alphonse de Candolle , Nikolai Vavilov (1887–1943) produced accounts of the biogeography , centres of origin , and evolutionary history of economic plants. Particularly since the mid-1960s there have been advances in understanding of the physics of plant physiological processes such as transpiration (the transport of water within plant tissues), the temperature dependence of rates of water evaporation from
13172-789: The fishing season. In Northbridge every December is the San Nicola (Saint Nicholas) Festival, which involves a pageant followed by a concert, predominantly in Italian. Suburbs surrounding the Fremantle area, such as Spearwood and Hamilton Hill , also contain high concentrations of Italians, Croatians, and Portuguese. Perth has also been home to a small Jewish community since 1829 – numbering 6,331 in 2021 – who have emigrated primarily from Eastern Europe and more recently from South Africa. A more recent wave of arrivals includes White South Africans . South Africans overtook those born in Italy as
13320-468: The form of short-lived thunderstorms, weak cold fronts and on occasions decaying tropical cyclones from Western Australia's northwest, which can bring heavy rain. Temperatures above 35 °C (95 °F) occur, on average, 26 days per year and rise above 40 °C (104 °F) on 5 days per year. The highest temperature recorded in Perth was 46.2 °C (115.2 °F) on 23 February 1991, although Perth Airport recorded 46.7 °C (116.1 °F) on
13468-575: The fossil record. It is widely regarded as a marker for the start of land plant evolution during the Ordovician period. The concentration of carbon dioxide in the atmosphere today is much lower than it was when plants emerged onto land during the Ordovician and Silurian periods. Many monocots like maize and the pineapple and some dicots like the Asteraceae have since independently evolved pathways like Crassulacean acid metabolism and
13616-529: The fourth-largest foreign group in 2001. By 2016, there were 35,262 South Africans residing in Perth. Many Afrikaners and Anglo-Africans emigrated to Perth during the 1980s and 1990s, with the phrase "packing for Perth" becoming associated with South Africans who choose to emigrate abroad, sometimes regardless of the destination. As a result, the city has been described as "the Australian capital of South Africans in exile". The reason for Perth's popularity among white South Africans has often been attributed to
13764-451: The functional relationships between plants and their habitats – the environments where they complete their life cycles . Plant ecologists study the composition of local and regional floras , their biodiversity , genetic diversity and fitness , the adaptation of plants to their environment, and their competitive or mutualistic interactions with other species. Some ecologists even rely on empirical data from indigenous people that
13912-412: The genome of progeny. This beneficial effect is also known as hybrid vigor or heterosis. Once outcrossing is established, subsequent switching to inbreeding becomes disadvantageous since it allows expression of the previously masked deleterious recessive mutations, commonly referred to as inbreeding depression. Perth Perth ( Nyungar : Boorloo ) is the capital city of Western Australia . It
14060-444: The global carbon and water cycles and plant roots bind and stabilise soils, preventing soil erosion . Plants are crucial to the future of human society as they provide food, oxygen, biochemicals , and products for people, as well as creating and preserving soil. Historically, all living things were classified as either animals or plants and botany covered the study of all organisms not considered animals. Botanists examine both
14208-621: The important botanical questions of the 21st century are the role of plants as primary producers in the global cycling of life's basic ingredients: energy, carbon, oxygen, nitrogen and water, and ways that our plant stewardship can help address the global environmental issues of resource management , conservation , human food security , biologically invasive organisms , carbon sequestration , climate change , and sustainability . Virtually all staple foods come either directly from primary production by plants, or indirectly from animals that eat them. Plants and other photosynthetic organisms are at
14356-478: The internal functions and processes within plant organelles , cells, tissues, whole plants, plant populations and plant communities. At each of these levels, a botanist may be concerned with the classification ( taxonomy ), phylogeny and evolution , structure ( anatomy and morphology ), or function ( physiology ) of plant life. The strictest definition of "plant" includes only the "land plants" or embryophytes , which include seed plants (gymnosperms, including
14504-476: The late 19th century, Western Australia experienced a mining boom. Perth became a key hub for supplying the goldfields, and the newfound prosperity helped finance the construction of important public buildings, roads, and railways. Perth's population grew from approximately 8,500 in 1881 to 61,000 in 1901. After a referendum in 1900, Western Australia joined the Federation of Australia in 1901, and "became
14652-602: The late 20th and early 21st centuries, a series of mining booms in various regions of Western Australia propelled Perth into the role of the regional headquarters for significant mining operations . Ranked as one of the world's most liveable cities , Perth was classified by the Globalization and World Cities Research Network as a Beta global city in 2020. As of 2021, Perth is divided into 30 local government areas , comprising over 350 suburbs . The metropolitan contours span 115 kilometres (71 mi) from Two Rocks in
14800-446: The latter having well over twice the population. The ethnic make-up of Perth changed in the second part of the 20th century when significant numbers of continental European immigrants arrived in the city. Prior to this, Perth's population had been almost completely Anglo-Celtic in ethnic origin. As Fremantle was the first landfall in Australia for many migrant ships coming from Europe in the 1950s and 1960s, Perth started to experience
14948-403: The leaf shapes and sizes of ancient land plants . Ozone depletion can expose plants to higher levels of ultraviolet radiation-B (UV-B), resulting in lower growth rates. Moreover, information from studies of community ecology , plant systematics , and taxonomy is essential to understanding vegetation change , habitat destruction and species extinction . Inheritance in plants follows
15096-576: The leaf surface and the molecular diffusion of water vapour and carbon dioxide through stomatal apertures. These developments, coupled with new methods for measuring the size of stomatal apertures, and the rate of photosynthesis have enabled precise description of the rates of gas exchange between plants and the atmosphere. Innovations in statistical analysis by Ronald Fisher , Frank Yates and others at Rothamsted Experimental Station facilitated rational experimental design and data analysis in botanical research. The discovery and identification of
15244-602: The location, the vast amount of land, and the slightly warmer climate compared to other large Australian cities – Perth has a Mediterranean climate reminiscent of Cape Town . Since the end of the White Australia policy in 1973, Asia has become an increasingly significant source of migrants, with communities from Vietnam , Malaysia , Indonesia , Thailand , Singapore , Hong Kong , Mainland China , and India all now well-established. There were 112,293 persons of Chinese descent in Perth in 2016 – 5.3% of
15392-576: The maintenance of biodiversity . Botany originated as herbalism , the study and use of plants for their possible medicinal properties . The early recorded history of botany includes many ancient writings and plant classifications. Examples of early botanical works have been found in ancient texts from India dating back to before 1100 BCE, Ancient Egypt , in archaic Avestan writings, and in works from China purportedly from before 221 BCE. Modern botany traces its roots back to Ancient Greece specifically to Theophrastus ( c. 371 –287 BCE),
15540-493: The major groups of organisms that carry out photosynthesis , a process that uses the energy of sunlight to convert water and carbon dioxide into sugars that can be used both as a source of chemical energy and of organic molecules that are used in the structural components of cells. As a by-product of photosynthesis, plants release oxygen into the atmosphere, a gas that is required by nearly all living things to carry out cellular respiration. In addition, they are influential in
15688-474: The mechanisms and control of gene expression during differentiation of plant cells and tissues . Botanical research has diverse applications in providing staple foods , materials such as timber , oil , rubber, fibre and drugs, in modern horticulture , agriculture and forestry , plant propagation , breeding and genetic modification , in the synthesis of chemicals and raw materials for construction and energy production, in environmental management , and
15836-620: The metropolitan area. Perth receives moderate, though highly seasonal, winter-based rainfall. Summers are generally hot, sunny and dry, lasting from December to March, with February generally the hottest month. Winters are relatively mild and wet, giving Perth a hot-summer Mediterranean climate ( Köppen climate classification Csa ). Perth has an average of 8.8 hours of sunshine per day, which equates to around 3,200 hours of sunshine and 138.7 clear days annually, making it Australia's sunniest capital city. Summers are typically hot and dry but not completely devoid of rain, with sporadic rainfall in
15984-485: The mid-1970s. A significant reduction in winter rainfall has been observed with a greater number of extreme rainfall events in the summer, such as the slow-moving storms on 8 February 1992 that brought 120.6 millimetres (4.75 in) of rain, heavy rainfall associated with a tropical low on 10 February 2017, which brought 114.4 millimetres (4.50 in) of rain, and the remnants of ex-Tropical Cyclone Joyce on 15 January 2018 with 96.2 millimetres (3.79 in). Perth
16132-513: The name Byerbrup for "the highland stretching along from Mount Eliza through the centre of the town of Perth". In 1947, Ludwig Glauert posited that Lyon may have misunderstood his sources and that "boorloo" or "belo" (now transcribed as "bilya") is simply the Noongar word for "river". Another source has interpreted Boorloo to mean "big swamp", describing the chain of lakes where the central business district and Northbridge are situated. Archaeological evidence attests to human habitation in
16280-512: The new Perth Airport, and the development of a new industrial zone centred on Kwinana. The advent of the McLarty Liberal Government (1947–1953) saw the emergence of something of a consensus on the need for continuing economic development. Economic growth was fuelled by large-scale public works, the post-war immigration program, and the success that various state governments had in attracting substantial foreign investment into
16428-517: The new government nonetheless petitioned the Imperial Parliament at Westminster. The House of Commons established a select committee to consider the issue but after 18 months of negotiations and lobbying, finally refused to consider the matter, declaring that it could not legally grant secession. Perth entered the post-war period with a population of approximately 280,000 and an economy that had not experienced sustained growth since
16576-525: The next eighteen years, 9,721 convicts arrived in Western Australia aboard 43 ships , outnumbering the approximately 7,300 free settlers. The designation of Perth as a city was formally announced by Queen Victoria in 1856. However, despite this recognition, Perth remained a tranquil town. A description from 1870 by a Melbourne journalist depicted it as: a quiet little town of some 3000 inhabitants spread out in straggling allotments down to
16724-416: The north to Singleton in the south, and 45 kilometres (28 mi) from the west coast to Sawyers Valley in the east. Beyond the central business district, predominant urban centres within the metropolitan area include Armadale , Fremantle , Joondalup , Midland , and Rockingham . Most of those were originally established as separate settlements and retained a distinct identity after being subsumed into
16872-596: The number of their male sexual organs. The 24th group, Cryptogamia , included all plants with concealed reproductive parts, mosses , liverworts , ferns , algae and fungi . Botany was originally a hobby for upper-class women. These women would collect and paint flowers and plants from around the world with scientific accuracy. The paintings were used to record many species that could not be transported or maintained in other environments. Marianne North illustrated over 900 species in extreme detail with watercolor and oil paintings. Her work and many other women's botany work
17020-447: The other hand with medicine and pharmacology, giving rise to fields such as agronomy , horticultural botany, phytopathology and phytopharmacology . The study of plants is vital because they underpin almost all animal life on Earth by generating a large proportion of the oxygen and food that provide humans and other organisms with aerobic respiration with the chemical energy they need to exist. Plants, algae and cyanobacteria are
17168-404: The outcome of prehistoric selection over thousands of years from among wild ancestral plants with the most desirable characteristics. Botanists study how plants produce food and how to increase yields, for example through plant breeding , making their work important to humanity's ability to feed the world and provide food security for future generations. Botanists also study weeds, which are
17316-487: The outer extent being the City of Wanneroo and the City of Swan to the north, the Shire of Mundaring , City of Kalamunda and the City of Armadale to the east, the Shire of Serpentine-Jarrahdale to the southeast and the City of Rockingham to the southwest, and including Rottnest Island and Garden Island off the west coast. This extent correlates with the Metropolitan Region Scheme , and
17464-791: The pain killer aspirin is the acetyl ester of salicylic acid , originally isolated from the bark of willow trees, and a wide range of opiate painkillers like heroin are obtained by chemical modification of morphine obtained from the opium poppy . Popular stimulants come from plants, such as caffeine from coffee, tea and chocolate, and nicotine from tobacco. Most alcoholic beverages come from fermentation of carbohydrate -rich plant products such as barley (beer), rice ( sake ) and grapes (wine). Native Americans have used various plants as ways of treating illness or disease for thousands of years. This knowledge Native Americans have on plants has been recorded by enthnobotanists and then in turn has been used by pharmaceutical companies as
17612-490: The plants with a highly fermentable sugar or oil content that are used as sources of biofuels , important alternatives to fossil fuels , such as biodiesel . Sweetgrass was used by Native Americans to ward off bugs like mosquitoes . These bug repelling properties of sweetgrass were later found by the American Chemical Society in the molecules phytol and coumarin . Plant ecology is the science of
17760-486: The pollen either fails to reach the stigma or fails to germinate and produce male gametes . This is one of several methods used by plants to promote outcrossing . In many land plants the male and female gametes are produced by separate individuals. These species are said to be dioecious when referring to vascular plant sporophytes and dioicous when referring to bryophyte gametophytes . Charles Darwin in his 1878 book The Effects of Cross and Self-Fertilization in
17908-442: The polymer cutin which is found in the plant cuticle that protects land plants from drying out. Plants synthesise a number of unique polymers like the polysaccharide molecules cellulose , pectin and xyloglucan from which the land plant cell wall is constructed. Vascular land plants make lignin , a polymer used to strengthen the secondary cell walls of xylem tracheids and vessels to keep them from collapsing when
18056-501: The practical value of earlier "physic gardens", often associated with monasteries, in which plants were cultivated for suspected medicinal uses. They supported the growth of botany as an academic subject. Lectures were given about the plants grown in the gardens. Botanical gardens came much later to northern Europe; the first in England was the University of Oxford Botanic Garden in 1621. German physician Leonhart Fuchs (1501–1566)
18204-503: The region, interspersed with clear and sunny days where minimum temperatures tend to drop below 5 °C (41 °F). The lowest temperature recorded in Perth was −0.7 °C (30.7 °F) on 17 June 2006. The lowest temperature within the Perth metropolitan area was −3.4 °C (25.9 °F) on the same day at Jandakot Airport , although temperatures at or below zero are rare occurrences. The lowest maximum temperature recorded in Perth
18352-461: The rise of the related molecular-scale biological approaches of molecular biology , genomics , proteomics and metabolomics , the relationship between the plant genome and most aspects of the biochemistry, physiology, morphology and behaviour of plants can be subjected to detailed experimental analysis. The concept originally stated by Gottlieb Haberlandt in 1902 that all plant cells are totipotent and can be grown in vitro ultimately enabled
18500-487: The river Swarte Swaene-Revier , a reference to the black swans prevalent in the region. After Vlamingh's observations, other Europeans conducted further voyages of exploration in the period between 1697 and 1829. However, as with Vlamingh's assessments, they judged the area inhospitable and unsuitable for the agriculture necessary to sustain a European-style settlement. Despite the Colony of New South Wales establishing
18648-590: The same day. On most summer afternoons a sea breeze , known locally as the Fremantle Doctor , blows from the southwest, providing relief from the hot northeasterly winds. Temperatures often fall below 30 °C (86 °F) a few hours after the arrival of the wind change. In the summer, the 3 pm dewpoint averages at around 12 °C (54 °F). Winters are mild and wet, with most of Perth's annual rainfall between May and September. Winters see significant rainfall as frontal systems move across
18796-680: The same fundamental principles of genetics as in other multicellular organisms. Gregor Mendel discovered the genetic laws of inheritance by studying inherited traits such as shape in Pisum sativum ( peas ). What Mendel learned from studying plants has had far-reaching benefits outside of botany. Similarly, " jumping genes " were discovered by Barbara McClintock while she was studying maize. Nevertheless, there are some distinctive genetic differences between plants and other organisms. Species boundaries in plants may be weaker than in animals, and cross species hybrids are often possible. A familiar example
18944-549: The sandy and relatively flat Swan Coastal Plain , which lies between the Darling Scarp and the Indian Ocean . The soils of this area are quite infertile. Much of colonial Perth was built on the Perth Wetlands , a series of freshwater wetlands running from Herdsman Lake in the west through to Claisebrook Cove in the east. To the east, the city is bordered by a low escarpment called the Darling Scarp. Perth
19092-563: The state, beginning with the construction of the Anglo-Iranian Oil Refinery at Kwinana in 1951–52. The result of this economic activity was the rapid growth of the population of Perth and a marked change in its urban design. Commencing in the 1950s, Perth began to expand along an extensive highway network laid out in the Stephenson-Hepburn Report , which noted that Perth was beginning to resemble
19240-426: The state, the non-base services provide most of the employment and income to the people of Perth. Perth experienced a period of recovery in 1990. In July 1994, the state government separated the city's CBD from its suburban districts, creating the City of Perth and three other local government areas. The central business district of Perth is bounded by the Swan River to the south and east, with Kings Park on
19388-603: The study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress . Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants , including some 391,000 species of vascular plants (of which approximately 369,000 are flowering plants ) and approximately 20,000 bryophytes . Botany originated in prehistory as herbalism with
19536-450: The study of plants, including methods of optical microscopy and live cell imaging , electron microscopy , analysis of chromosome number , plant chemistry and the structure and function of enzymes and other proteins . In the last two decades of the 20th century, botanists exploited the techniques of molecular genetic analysis , including genomics and proteomics and DNA sequences to classify plants more accurately. Modern botany
19684-471: The study of plants. In 1665, using an early microscope, Polymath Robert Hooke discovered cells (a term he coined) in cork , and a short time later in living plant tissue. During the 18th century, systems of plant identification were developed comparable to dichotomous keys , where unidentified plants are placed into taxonomic groups (e.g. family, genus and species) by making a series of choices between pairs of characters . The choice and sequence of
19832-482: The town Perth according to the wishes of Sir George Murray". Since 2019, the Noongar name Boorloo has been recognised as denoting the central business district , the local government area , or the capital city in general. The name Boorloo was initially recorded by Robert Menli Lyon as Boorlo in 1833, which was interpreted as "Perth, properly Point Fraser" (a location in East Perth ). He also gave
19980-526: The use of genetic engineering experimentally to knock out a gene or genes responsible for a specific trait, or to add genes such as GFP that report when a gene of interest is being expressed. These technologies enable the biotechnological use of whole plants or plant cell cultures grown in bioreactors to synthesise pesticides , antibiotics or other pharmaceuticals , as well as the practical application of genetically modified crops designed for traits such as improved yield. Modern morphology recognises
20128-453: The water's edge, intermingled with gardens and shrubberies and half rural in its aspect ... The main streets are macadamised, but the outlying ones and most of the footpaths retain their native state from the loose sand — the all pervading element of Western Australia — productive of intense glare or much dust in the summer and dissolving into slush during the rainy season. With the discovery of gold at Kalgoorlie and Coolgardie in
20276-482: The western end and the railway reserve as the northern border. A state and federally funded project named Perth City Link sank a section of the railway line to allow easy pedestrian access between Northbridge and the CBD. The Perth Arena is an entertainment and sporting arena in the city link area that has received several architectural awards from institutions such as the Design Institute of Australia ,
20424-573: The wider metropolitan area. Mandurah , Western Australia's second-largest city, forms a conurbation with Perth along the coastline. Despite this, it is generally regarded as an independent city. Perth features several important public buildings, as well as cultural and heritage sites . The city has various notable government buildings, including the Parliament House , Government House , the Supreme Court Buildings and
20572-485: The word plant (e.g. plant taxonomy, plant ecology, plant anatomy, plant morphology, plant systematics, plant ecology), or prefixing or substituting the prefix phyto- (e.g. phytochemistry , phytogeography ). The study of fossil plants is palaeobotany . Other fields are denoted by adding or substituting the word botany (e.g. systematic botany ). Phytosociology is a subfield of plant ecology that classifies and studies communities of plants. The intersection of fields from
20720-456: The world. He maintained detailed involvement in the family finance, in wills and in the business but he also continued his evangelical work making many visits around the country, including to Dublin . He gave talks to workers at York Glass works in 1858 and also to the rail wagon works. He was involved in Quaker schools at Bootham and Ackworth and gave financial as well as spiritual help for
20868-535: Was also hit by a severe thunderstorm on 22 March 2010, which brought 40.2 mm (1.58 in) of rain, and large hail and caused significant damage in the metropolitan area. The average sea temperature ranges from 18.9 °C (66.0 °F) in October to 23.4 °C (74.1 °F) in March. With more than two million residents, Perth is one of the most isolated major cities in the world. The nearest city with
21016-486: Was flourishing with 37 varieties of vines, 31 of strawberries, 170 gooseberries, 129 roses and 125 apple trees. In 1822 Backhouse married Deborah Lowe, and in 1824 he was admitted as a minister in the Religious Society of Friends . As a dedicated Quaker and clerk of York monthly meeting from 1825, he travelled in the ministry from that year. His commitment and evangelising were central to his life. He addressed
21164-611: Was founded by Captain James Stirling in 1829 as the administrative centre of the Swan River Colony . The city is situated on the traditional lands of the Whadjuk Noongar people, where Aboriginal Australians have lived for at least 45,000 years. Perth was named after the city of Perth in Scotland . Perth was proclaimed as a city by Queen Victoria in 1856, although the City of Perth currently governs only
21312-540: Was greeted fervently by the York Quarterly and Monthly Meetings. The nursery had flourished in his absence but with the coming of the railway had had to move from Toft Green to Fishergate. When his brother died in 1845, he brought his own son James into the business, and with him supervised the move in 1853 to a 100-acre site, greater than Kew , at Holgate. The most striking feature was a rock (alpine) garden, 40 glasshouses, underground fernery and plants from all over
21460-403: Was mentioned at a temperance meeting in Perth and they felt 'the prevailing immorality' was fuelled by drink. They also looked at the policy towards Aborigines 'this injured race of our fellow men'. Alongside their work with prisons they set up and visited Quaker meeting houses. Backhouse and Walker then went to Mauritius and South Africa and continued their missionary work, preaching whenever
21608-399: Was one of "the three German fathers of botany", along with theologian Otto Brunfels (1489–1534) and physician Hieronymus Bock (1498–1554) (also called Hieronymus Tragus). Fuchs and Brunfels broke away from the tradition of copying earlier works to make original observations of their own. Bock created his own system of plant classification. Physician Valerius Cordus (1515–1544) authored
21756-412: Was the beginning of popularizing botany to a wider audience. Increasing knowledge of plant anatomy , morphology and life cycles led to the realisation that there were more natural affinities between plants than the artificial sexual system of Linnaeus. Adanson (1763), de Jussieu (1789), and Candolle (1819) all proposed various alternative natural systems of classification that grouped plants using
21904-656: Was the will of God. The nursery was an enterprise run by Quakers; Thomas Wagstaffe was the clerk of the Tivetshall Monthly Meeting and a prominent benefactor to the Society of Friends in Norfolk. In 1815 Backhouse moved to York , where he and his brother Thomas purchased the York nursery business of John and George Telford in Toft Green, which had been in existence for 150 years. By 1821 the business
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