Genus ( / ˈ dʒ iː n ə s / ; pl. : genera / ˈ dʒ ɛ n ər ə / ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses . In binomial nomenclature , the genus name forms the first part of the binomial species name for each species within the genus.
45-579: See text Plumeria ( / p l uː ˈ m ɛ r i ə / ), also known as frangipani , is a genus of flowering plants in the subfamily Rauvolfioideae , of the family Apocynaceae . Most species are deciduous shrubs or small trees . The species are native to the Neotropical realm (in Mexico , Central America , and the Caribbean , and as far south as Brazil and as far north as Florida in
90-557: A species : see Botanical name and Specific name (zoology) . The rules for the scientific names of organisms are laid down in the nomenclature codes , which allow each species a single unique name that, for animals (including protists ), plants (also including algae and fungi ) and prokaryotes ( bacteria and archaea ), is Latin and binomial in form; this contrasts with common or vernacular names , which are non-standardized, can be non-unique, and typically also vary by country and language of usage. Except for viruses ,
135-651: A later homonym of a validly published name is a nomen illegitimum or nom. illeg. ; for a full list refer to the International Code of Nomenclature for algae, fungi, and plants and the work cited above by Hawksworth, 2010. In place of the "valid taxon" in zoology, the nearest equivalent in botany is " correct name " or "current name" which can, again, differ or change with alternative taxonomic treatments or new information that results in previously accepted genera being combined or split. Prokaryote and virus codes of nomenclature also exist which serve as
180-628: A long time and redescribed as new by a range of subsequent workers, or if a range of genera previously considered separate taxa have subsequently been consolidated into one. For example, the World Register of Marine Species presently lists 8 genus-level synonyms for the sperm whale genus Physeter Linnaeus, 1758, and 13 for the bivalve genus Pecten O.F. Müller, 1776. Within the same kingdom, one generic name can apply to one genus only. However, many names have been assigned (usually unintentionally) to two or more different genera. For example,
225-465: A more intense, plumeria-like aroma. In the Western Ghats of Karnataka , the bride and groom exchange garlands of cream-coloured plumeria during weddings. Red-colored flowers are not used in weddings in this region. Plumeria plants are found in most of the temples in these regions. In Sri Lankan tradition , plumeria is associated with worship. One of the heavenly damsels in the frescoes of
270-409: A reference for designating currently accepted genus names as opposed to others which may be either reduced to synonymy, or, in the case of prokaryotes, relegated to a status of "names without standing in prokaryotic nomenclature". An available (zoological) or validly published (botanical) name that has been historically applied to a genus but is not regarded as the accepted (current/valid) name for
315-427: A taxon; however, the names published in suppressed works are made unavailable via the relevant Opinion dealing with the work in question. In botany, similar concepts exist but with different labels. The botanical equivalent of zoology's "available name" is a validly published name . An invalidly published name is a nomen invalidum or nom. inval. ; a rejected name is a nomen rejiciendum or nom. rej. ;
360-455: A total of c. 520,000 published names (including synonyms) as at end 2019, increasing at some 2,500 published generic names per year. "Official" registers of taxon names at all ranks, including genera, exist for a few groups only such as viruses and prokaryotes, while for others there are compendia with no "official" standing such as Index Fungorum for fungi, Index Nominum Algarum and AlgaeBase for algae, Index Nominum Genericorum and
405-474: Is also used as a common name, especially in horticultural circles. The name " frangipani " comes from a 16th-century marquis of the noble Frangipani family in Italy, who created a synthetic plumeria-like perfume . Common names for plants in the genus vary widely according to region, variety, and whim, but frangipani or variations on that theme are the most common. In eastern India and Bangladesh, plumeria
450-527: Is an incense containing a fragrance combining plumeria and sandalwood. While plumeria is an ingredient in Indian champa incense, the extent of its use varies between family recipes. Most champa incenses also incorporate other tree resins, such as Halmaddi ( Ailanthus triphysa ) and benzoin resin , as well as other floral ingredients, including champaca ( Magnolia champaca ), geranium ( Pelargonium graveolens ), and vanilla ( Vanilla planifolia ) to produce
495-612: Is discouraged by both the International Code of Zoological Nomenclature and the International Code of Nomenclature for algae, fungi, and plants , there are some five thousand such names in use in more than one kingdom. For instance, A list of generic homonyms (with their authorities), including both available (validly published) and selected unavailable names, has been compiled by the Interim Register of Marine and Nonmarine Genera (IRMNG). The type genus forms
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#1732772559510540-660: Is one of the everblooming types with nondeciduous, evergreen leaves. Another, semi-deciduous species that retains leaves and flowers in winter is P. obtusa ; commonly known as "Singapore plumeria". Plumeria trees flower from early summer to fall. Their blossoms grow in clusters on ends of the stems, they are made of tubular corolla with a length of 2–4 inches (5.1–10.2 cm) that split sharply into five rounded and waxy petals that overlap each other. These flowers come in many colours including pink, red, white and yellow, orange, or pastel. They have separate anthers. The flowers are highly fragrant, especially at night. Their scent
585-483: Is perceived to have floral elements of jasmine , citrus , gardenia , fruity aromatic notes of coconut , peach , vanilla , as well as lactonic , woody accords. However, they yield no nectar . Their scent tricks sphinx moths into pollinating them by transferring pollen from flower to flower in their fruitless search for nectar. Insects or human pollination can help create new varieties of plumeria. Plumeria trees from cross-pollinated seeds may show characteristics of
630-460: Is somewhat arbitrary. Although all species within a genus are supposed to be "similar", there are no objective criteria for grouping species into genera. There is much debate among zoologists about whether enormous, species-rich genera should be maintained, as it is extremely difficult to come up with identification keys or even character sets that distinguish all species. Hence, many taxonomists argue in favor of breaking down large genera. For instance,
675-790: Is the International Plant Names Index , and the World Checklist of Vascular Plants (WCVP). The database contains information of the world's flora that was gathered in the past 250 years of botanical research. It aims to make data available from projects that no longer have an online presence or were never externally available. POWO has information on taxonomy, identification, distribution, traits, threat status and use of plants worldwide. It also contains many images. As of September 2024 , POWO contained 1,433,000 global plant names, 531,800 detailed descriptions, and 400,900 images. This botany article
720-474: Is the type species , and the generic name is permanently associated with the type specimen of its type species. Should the specimen turn out to be assignable to another genus, the generic name linked to it becomes a junior synonym and the remaining taxa in the former genus need to be reassessed. In zoological usage, taxonomic names, including those of genera, are classified as "available" or "unavailable". Available names are those published in accordance with
765-415: Is traditionally considered as a variety of the champak flower, the golok chapa , meaning the champaka that resides in the heavenly home of Sri Krishna , a Hindu god at the highest realm of heaven. In Sri Lanka it is known as "Araliya" or "Temple Flower". The flower, considered sacred, is also known by the names gulancha and kath golap. Plumeria branches are succulent . The trunk and branches of
810-621: The International Code of Zoological Nomenclature ; the earliest such name for any taxon (for example, a genus) should then be selected as the " valid " (i.e., current or accepted) name for the taxon in question. Consequently, there will be more available names than valid names at any point in time; which names are currently in use depending on the judgement of taxonomists in either combining taxa described under multiple names, or splitting taxa which may bring available names previously treated as synonyms back into use. "Unavailable" names in zoology comprise names that either were not published according to
855-738: The International Plant Names Index for plants in general, and ferns through angiosperms, respectively, and Nomenclator Zoologicus and the Index to Organism Names for zoological names. Totals for both "all names" and estimates for "accepted names" as held in the Interim Register of Marine and Nonmarine Genera (IRMNG) are broken down further in the publication by Rees et al., 2020 cited above. The accepted names estimates are as follows, broken down by kingdom: The cited ranges of uncertainty arise because IRMNG lists "uncertain" names (not researched therein) in addition to known "accepted" names;
900-524: The Plumeria species have a milky latex sap that, like many other Apocynaceae, contains poisonous compounds that irritate the eyes and skin. Plumeria trees are small or low shrubs. The leaves grow at tips of their branches. Various species and cultivar have various leaf shape and arrangements . The leaves of P. alba are narrow and corrugated, whereas leaves of P. pudica have an elongated shape and glossy, dark-green color. P. pudica
945-645: The United States ), but are often grown as cosmopolitan ornamentals in tropical regions, especially in Hawaii , as well as hot desert climates in the Arabian Peninsula with proper irrigation . The genus Plumeria is named in honour of 17th-century French botanist and Catholic monk Charles Plumier , who traveled to the New World documenting many plant and animal species. Plumeria
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#1732772559510990-404: The platypus belongs to the genus Ornithorhynchus although George Shaw named it Platypus in 1799 (these two names are thus synonyms ) . However, the name Platypus had already been given to a group of ambrosia beetles by Johann Friedrich Wilhelm Herbst in 1793. A name that means two different things is a homonym . Since beetles and platypuses are both members of the kingdom Animalia,
1035-473: The French botanist Joseph Pitton de Tournefort (1656–1708) is considered "the founder of the modern concept of genera". The scientific name (or the scientific epithet) of a genus is also called the generic name ; in modern style guides and science, it is always capitalised. It plays a fundamental role in binomial nomenclature , the system of naming organisms , where it is combined with the scientific name of
1080-625: The Maya, plumerias have been associated with deities representing life and fertility, and the flowers also became strongly connected with female sexuality. Nahuatl -speaking people during the height of the Aztec Empire used plumerias to signify elite status, and planted plumeria trees in the gardens of nobles . In the Philippines , where plumerias were introduced early in the 1560s from Mexico, plumerias are associated with graveyards, since
1125-710: The Philippines. Balinese Hindus use the flowers in their temple offerings. The plumeria's fragrance is also associated with the Kuntilanak , an evil vampiric spirit of a dead mother in Malaysian-Indonesian folklores. In several Pacific islands, where plumerias were introduced in the late 19th century, such as Tahiti , Fiji , Samoa , Hawaii , New Zealand , Tonga , and the Cook Islands , Plumeria species are used for making leis . In Hawaii,
1170-442: The base for higher taxonomic ranks, such as the family name Canidae ("Canids") based on Canis . However, this does not typically ascend more than one or two levels: the order to which dogs and wolves belong is Carnivora ("Carnivores"). The numbers of either accepted, or all published genus names is not known precisely; Rees et al., 2020 estimate that approximately 310,000 accepted names (valid taxa) may exist, out of
1215-451: The clean fresh-cut end will enable callusing. Plumeria cuttings can also be propagated by grafting to an already rooted system. The Plumeria Society of America lists 368 registered cultivars of Plumeria as of 2009. In Mesoamerica , plumerias have carried complex symbolic significance for over two millennia, with striking examples from the Maya and Aztec periods into the present. Among
1260-633: The fifth-century rock fortress Sigiriya holds a five-petalled flower in her right hand that is indistinguishable from plumeria. In Eastern Africa , frangipani are sometimes referred to in Swahili love poems. Some species of plumeria have been studied for their potential medicinal value. Genus The composition of a genus is determined by taxonomists . The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including
1305-577: The flower is called melia. In modern Polynesian culture, the flower can be worn by women to indicate their relationship status—over the right ear if seeking a relationship, and over the left if taken. Plumeria alba is the national flower of Laos , where it is known under the local name champa or dok champa . In Bengali culture , most white flowers, and in particular, plumeria ( Bengali , chômpa or chãpa ), are associated with funerals and death. Indian incenses scented with Plumeria rubra have " champa " in their names. For example, nag champa
1350-446: The form "author, year" in zoology, and "standard abbreviated author name" in botany. Thus in the examples above, the genus Canis would be cited in full as " Canis Linnaeus, 1758" (zoological usage), while Hibiscus , also first established by Linnaeus but in 1753, is simply " Hibiscus L." (botanical usage). Each genus should have a designated type , although in practice there is a backlog of older names without one. In zoology, this
1395-737: The generic name (or its abbreviated form) still forms the leading portion of the scientific name, for example, Canis lupus lupus for the Eurasian wolf subspecies, or as a botanical example, Hibiscus arnottianus ssp. immaculatus . Also, as visible in the above examples, the Latinised portions of the scientific names of genera and their included species (and infraspecies, where applicable) are, by convention, written in italics . The scientific names of virus species are descriptive, not binomial in form, and may or may not incorporate an indication of their containing genus; for example,
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1440-432: The idea that a newly defined genus should fulfill these three criteria to be descriptively useful: Moreover, genera should be composed of phylogenetic units of the same kind as other (analogous) genera. The term "genus" comes from Latin genus , a noun form cognate with gignere ('to bear; to give birth to'). The Swedish taxonomist Carl Linnaeus popularized its use in his 1753 Species Plantarum , but
1485-633: The largest component, with 23,236 ± 5,379 accepted genus names, of which 20,845 ± 4,494 are angiosperms (superclass Angiospermae). By comparison, the 2018 annual edition of the Catalogue of Life (estimated >90% complete, for extant species in the main) contains currently 175,363 "accepted" genus names for 1,744,204 living and 59,284 extinct species, also including genus names only (no species) for some groups. The number of species in genera varies considerably among taxonomic groups. For instance, among (non-avian) reptiles , which have about 1180 genera,
1530-677: The lizard genus Anolis has been suggested to be broken down into 8 or so different genera which would bring its ~400 species to smaller, more manageable subsets. Plants of the World Online Plants of the World Online ( POWO ) is an online database published by the Royal Botanic Gardens, Kew . It was launched in March 2017 with the ultimate aim being "to enable users to access information on all
1575-403: The most (>300) have only 1 species, ~360 have between 2 and 4 species, 260 have 5–10 species, ~200 have 11–50 species, and only 27 genera have more than 50 species. However, some insect genera such as the bee genera Lasioglossum and Andrena have over 1000 species each. The largest flowering plant genus, Astragalus , contains over 3,000 species. Which species are assigned to a genus
1620-570: The mother tree or their flowers might just have a distinct appearance. Its fruit separates into two follicles with winged seeds. The genus Plumeria includes about 18 accepted species, with over 100 regarded as synonyms. As of January 2024, Plants of the World Online accepted the following species: Plumeria can be propagated by seed or vegetatively propagated by cutting stem tips in spring, allowing them to dry at their bases, then planting in well-drained soil. These are particularly susceptible to rot in moist soil. Applying rooting hormone to
1665-428: The name could not be used for both. Johann Friedrich Blumenbach published the replacement name Ornithorhynchus in 1800. However, a genus in one kingdom is allowed to bear a scientific name that is in use as a generic name (or the name of a taxon in another rank) in a kingdom that is governed by a different nomenclature code. Names with the same form but applying to different taxa are called "homonyms". Although this
1710-541: The provisions of the ICZN Code, e.g., incorrect original or subsequent spellings, names published only in a thesis, and generic names published after 1930 with no type species indicated. According to "Glossary" section of the zoological Code, suppressed names (per published "Opinions" of the International Commission of Zoological Nomenclature) remain available but cannot be used as the valid name for
1755-497: The specific name particular to the wolf. A botanical example would be Hibiscus arnottianus , a particular species of the genus Hibiscus native to Hawaii. The specific name is written in lower-case and may be followed by subspecies names in zoology or a variety of infraspecific names in botany . When the generic name is already known from context, it may be shortened to its initial letter, for example, C. lupus in place of Canis lupus . Where species are further subdivided,
1800-412: The standard format for a species name comprises the generic name, indicating the genus to which the species belongs, followed by the specific epithet, which (within that genus) is unique to the species. For example, the gray wolf 's scientific name is Canis lupus , with Canis ( Latin for 'dog') being the generic name shared by the wolf's close relatives and lupus (Latin for 'wolf') being
1845-661: The strong smell of the flowers were used to mask the "smell of death". This association spread into neighboring regions in Ternate and into Malaysia and Indonesia . In these two countries, plumerias are still often associated with ghosts and cemeteries . Yangsze Choo in her novel The Night Tiger for example described it as is "the graveyard flower of the Malays". Plumerias often are planted on burial grounds in all three nations. They are also common ornamental plants in houses, parks, parking lots, and other open-air establishments in
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1890-403: The taxon is termed a synonym ; some authors also include unavailable names in lists of synonyms as well as available names, such as misspellings, names previously published without fulfilling all of the requirements of the relevant nomenclatural code, and rejected or suppressed names. A particular genus name may have zero to many synonyms, the latter case generally if the genus has been known for
1935-576: The values quoted are the mean of "accepted" names alone (all "uncertain" names treated as unaccepted) and "accepted + uncertain" names (all "uncertain" names treated as accepted), with the associated range of uncertainty indicating these two extremes. Within Animalia, the largest phylum is Arthropoda , with 151,697 ± 33,160 accepted genus names, of which 114,387 ± 27,654 are insects (class Insecta). Within Plantae, Tracheophyta (vascular plants) make up
1980-429: The virus species " Salmonid herpesvirus 1 ", " Salmonid herpesvirus 2 " and " Salmonid herpesvirus 3 " are all within the genus Salmonivirus ; however, the genus to which the species with the formal names " Everglades virus " and " Ross River virus " are assigned is Alphavirus . As with scientific names at other ranks, in all groups other than viruses, names of genera may be cited with their authorities, typically in
2025-503: The world's known seed-bearing plants by 2020". This was Kew's answer to the "2020 target 1" of the Convention on Biological Diversity (CBD): "an online flora for all known plants." The initial focus was on tropical African Floras, particularly Flora Zambesiaca, Flora of West Tropical Africa and Flora of Tropical East Africa. The database uses the same taxonomical source as Kew's World Checklist of Selected Plant Families , which
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