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Orchid taxonomy is still being revised and each year about another 150 new species are being discovered. The list of genera alone currently stands just short of 1000 entries. From a cladistic point of view, the orchid family is considered to be monophyletic, i.e. the group incorporates all the taxa derived from an ancestral group.
About 150 species and about a dozen new genera were described each year from 2000 to 2015. [citation needed] According to Dressler, there are 5 subfamilies, 22 tribes, 70 subtribes, and about 850 genera of orchids. When he published his classification, only about 20,000 species of orchids were known. Several thousand have been described since ...
Most orchid species lack endosperm in their seed and must enter symbiotic relationships with various mycorrhizal basidiomyceteous fungi that provide them the necessary nutrients to germinate, so almost all orchid species are mycoheterotrophic during germination and reliant upon fungi to complete their lifecycles.
There are 42 orchid species native to Indiana, while Hawaii only has three. ... The flower gets its genus name, Spiranthes, from the way its flowers spiral around each other in an upright spike.
Bulbophyllum Thouars 1822, is a large orchid genus that contains over 2000 epiphytic species from the orchid family Orchidaceae. The following is a list of Bulbophyllum species accepted by the World Checklist of Selected Plant Families as at January 2019: [ 1 ]
Phalaenopsis (/ ˌ f æ l ɪ ˈ n ɒ p s ɪ s /), also known as moth orchids, [2] is a genus of about seventy species of plants in the family Orchidaceae.Orchids in this genus are monopodial epiphytes or lithophytes with long, coarse roots, short, leafy stems and long-lasting, flat flowers arranged in a flowering stem that often branches near the end.