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Taxa are hierarchical groups of organisms, and their ranks describes their position in this hierarchy. High-ranking taxa (e.g. those considered to be domains or kingdoms, for instance) include more sub-taxa than low-ranking taxa (e.g. those considered genera, species or subspecies).
Saxifragales (colloquial/plural: the saxifrages) is an order of angiosperms, or flowering plants, containing 15 botanical families and around 100 genera, with nearly 2,500 species. Of the 15 families, many are small, with eight of them being monotypic (having only a single genus).
27 records of plants. Origin Africa. This species' phanerogam has the highest cobalt content. Its distribution could be governed by cobalt rather than copper. [36] [1]: 891 [33] Cu: Helianthus annuus: Sunflower: Phytoextraction with rhizofiltration [1]: 898 [33] Cu: 1000: Larrea tridentata: Creosote Bush: 67 records of plants. Origin U.S. [1 ...
Plant taxonomy is the science that finds, identifies, describes, classifies, and names plants. It is one of the main branches of taxonomy (the science that finds, describes, classifies, and names living things). Plant taxonomy is closely allied to plant systematics, and there is no sharp boundary between
Genera from some other groups of vascular plants (like pteridophytes), which have similarly large numbers of species, include Selaginella, Asplenium and Cyathea. [1] Astragalus is the largest flowering plant genus, with more than 3,200 species, including Astragalus agnicidus.
In plant breeding nomenclature, at least in countries that are signatory to the UPOV Convention, "variety" or "plant variety" is a legal term. [citation needed] In zoological nomenclature, the only allowed rank below that of species is that of subspecies. A name that was published before 1961 as that of a variety is taken to be the name of a ...
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
Linnaeus' kingdoms were in turn divided into classes, and they, in turn, into orders, genera (singular: genus), and species (singular: species), with an additional rank lower than species, though these do not precisely correspond to the use of these terms in modern taxonomy. [2]