In biological classification , a subfamily ( Latin : subfamilia , plural subfamiliae ) is an auxiliary (intermediate) taxonomic rank , next below family but more inclusive than genus . Standard nomenclature rules end botanical subfamily names with "-oideae", and zoological subfamily names with "-inae".
10-477: See text . The Polygalaceae or the milkwort family are made up of flowering plants in the order Fabales . They have a near-cosmopolitan range , with about 27 genera and ca . 900 known species of herbs , shrubs and trees . Over half of the species are in one genus, Polygala , the milkworts . The family was first described in 1809 by Johann Hoffmansegg and Johann Link . In 1896, Robert Chodat split it into 3 tribes. A fourth tribe
20-1047: A capsule, samara , or drupe . The Polygalaceae comprise the following genera, with tribes based on various sources. Modern molecular phylogenetics suggest the following relationships: Surianaceae ( outgroup ) Xanthophyllum Moutabea Balgoya (now included in Moutabea ) Eriandra Barnhartia Diclidanthera Atroxima Carpolobia Bredemeyera Acanthocladus Gymnospora Hebecarpa Badiera Securidaca Phlebotaenia Rhinotropis Comesperma Ancylotropis Monnina Asemeia Caamembeca Hualania Heterosamara Polygaloides Polygala subgen. Chodatia Salomonia Epirixanthes Polygala subgen. Polygala (Old World Clade) Polygala subgen. Polygala (New World Clade) Muraltia Family (biology) Family ( Latin : familia , pl. : familiae )
30-554: A lack of widespread consensus within the scientific community for extended periods. The continual publication of new data and diverse opinions plays a crucial role in facilitating adjustments and ultimately reaching a consensus over time. The naming of families is codified by various international bodies using the following suffixes: The taxonomic term familia was first used by French botanist Pierre Magnol in his Prodromus historiae generalis plantarum, in quo familiae plantarum per tabulas disponuntur (1689) where he called
40-499: Is commonly referred to as the "walnut family". The delineation of what constitutes a family— or whether a described family should be acknowledged— is established and decided upon by active taxonomists . There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to
50-485: Is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy . It is classified between order and genus . A family may be divided into subfamilies , which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae , but that family
60-494: The Genera Plantarum of George Bentham and Joseph Dalton Hooker this word ordo was used for what now is given the rank of family. Families serve as valuable units for evolutionary, paleontological, and genetic studies due to their relatively greater stability compared to lower taxonomic levels like genera and species. Subfamily Detarioideae is an example of a botanical subfamily. Detarioideae
70-540: The family as a rank intermediate between order and genus was introduced by Pierre André Latreille in his Précis des caractères génériques des insectes, disposés dans un ordre naturel (1796). He used families (some of them were not named) in some but not in all his orders of "insects" (which then included all arthropods ). In nineteenth-century works such as the Prodromus of Augustin Pyramus de Candolle and
80-575: The seventy-six groups of plants he recognised in his tables families ( familiae ). The concept of rank at that time was not yet settled, and in the preface to the Prodromus Magnol spoke of uniting his families into larger genera , which is far from how the term is used today. In his work Philosophia Botanica published in 1751, Carl Linnaeus employed the term familia to categorize significant plant groups such as trees , herbs , ferns , palms , and so on. Notably, he restricted
90-549: The use of this term solely within the book's morphological section, where he delved into discussions regarding the vegetative and generative aspects of plants. Subsequently, in French botanical publications, from Michel Adanson 's Familles naturelles des plantes (1763) and until the end of the 19th century, the word famille was used as a French equivalent of the Latin ordo (or ordo naturalis ). In zoology ,
100-871: Was split off from the tribe Polygaleae in 1992. Under the Cronquist classification system, Polygalaceae were treated in a separate order of their own, Polygalales. Currently, according to the Angiosperm Phylogeny Group , the family belongs in Fabales. Polygalaceae are annual or perennial herbs, shrubs, trees or lianas. Its zygomorphic , hermaphrodite , bisexual flowers have 3-5 petals and 5 sepals . Its leaves are usually alternate , but may be opposite , fascicled , or verticillate . Each flower usually contains 8 stamens, though this may range from 3 to 10. They are usually in 2 series. The fruits of each plant can be
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