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Orchidoideae | |
---|---|
Neotinea tridentata subsp. commutata | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Orchidoideae |
Tribes | |
See text |
The Orchidoideae, or the orchidoid orchids, are a subfamily of the orchid family (Orchidaceae) that contains around 3630 species. [1] Species typically have a single (monandrous), fertile anther which is erect and basitonic.
The subfamily Orchidoideae and the previously recognized subfamily Spiranthoideae are considered the closest allies in the natural group of the monandrous orchids because of several generally shared characters:
Phylogeny of the Orchidoideae is volatile and still subject to change. [2] Historically, the Orchidoideae have been partitioned into up to 6 tribes, including Orchideae, Diseae, Cranichideae, Chloraeeae, Diurideae, and Codonorchideae. However, the most recent molecular phylogenetics analysis led by Chase et al. in 2015 and subsequently by Chen et al. in 2017 indicates that the Orchidoideae should be split into 4 tribes: the Orchideae, Cranichideae, Diurideae, and Codonorchideae. [2] [3] [4]
This monophyletic tribe consists of only one genus, Codonorchis , found in South America. [2]
This cosmopolitan tribe comprises 8 currently accepted subtribes. Molecular evidence suggests that the former Chloraeeae are sister to the rest of the Cranichideae. As such, the Chloraeeae are now considered a subtribe of the Cranichideae. [2] Moreover, based on morphological and genetic evidence, the genus Discyphus was elevated out of the Spiranthinae to form its own monophyletic subtribe, the Discyphinae. [2]
Once divided into the Orchidinae and Habenariinae [3] (a nonsystematic paraphyletic splitting), the Orchideae now comprise 6 subtribes. [5] [4] Along with previous molecular studies, Chase et al's 2015 analysis confirmed that Diseae was a polyphyletic grouping. Consequently, the former subtribes of Diseae have been redistributed within the Orchideae (for instance, Satyrium is now classified in the Orchidinae). In his 2015 study Chase recommended further study of historically problematic genera in the former Diseae such as Huttonaea and Pachites. Further molecular analysis by Chen et al. in 2017 led to the following reorganization: [2] [4]
The Diurideae, a predominantly Australasian tribe, retain their previous subtribal organization and comprise 9 taxa: [2]
The Pleurothallidinae are a neotropical subtribe of plants of the orchid family (Orchidaceae) including 29 genera in more than 4000 species.
The taxonomy of the Orchidaceae (orchid family) has evolved slowly during the last 250 years, starting with Carl Linnaeus who in 1753 recognized eight genera. De Jussieu recognized the Orchidaceae as a separate family in his Genera Plantarum in 1789. Olof Swartz recognized 25 genera in 1800. Louis Claude Richard provided us in 1817 with the descriptive terminology of the orchids. (See External links below). The next step was taken in 1830-1840 by John Lindley, who recognized four subfamilies. He is generally recognized as the father of orchid taxonomy. The next important step was taken by George Bentham with a new classification, recognizing subtribes for the first time. This classification was first presented in a paper that Bentham read to the Royal Society in 1881. Then it was published in 1883 in the final volume of Genera Plantarum. The next great contributors were Pfitzer (1887), Schlechter (1926), Mansfeld (1937), Dressler and Dodson (1960), Garay (1960, 1972), Vermeulen (1966), again Dressler (1981). and Burns-Balogh and Funk (1986). Dressler's 1993 book had considerable influence on later work.
Vanilloideae is one of the subfamilies of orchids belonging to the large family Orchidaceae.
Manniella is a genus of orchids belonging to the subfamily Orchidoideae.
Tsaiorchis is a genus of flowering plants in the family Orchidaceae.
Hemipilia keiskei is a species of plant in the family Orchidaceae. The species is endemic to Japan.
An alliance is an informal grouping used in biological taxonomy. The term "alliance" is not a taxonomic rank defined in any of the nomenclature codes. It is used for any group of species, genera or tribes to which authors wish to refer, that have at some time provisionally been considered to be closely related.
Galeottiella is a genus of flowering plants from the orchid family, Orchidaceae. Traditionally it had been included in subtribe Spiranthinae, but following molecular phylogenetic and morphological studies it is now placed in a subtribe on its own, Galeottiellinae.
Dendrobieae is a tribe in the subfamily Epidendroideae, in the family Orchidaceae. The Dendrobieae are mostly tropical, epiphytic orchids which contain pseudobulbs.
Orchideae is a tribe of orchids in the subfamily Orchidoideae. Historically, it was divided into 2 subtribes, Orchidinae and Habenariinae. The subtribe Orchidinae alone contains about 1,800 species. However, although some phylogenetic studies have established the monophyly of the subtribes, the generic boundaries are unclear, with many genera as traditionally circumscribed being paraphyletic or even polyphyletic. Species of genera such as Habenaria and Platanthera have been placed into both subtribes. A 2017 molecular phylogenetic study found that both subtribes did form clades, but did not formally recognize Habenariinae, because of missing genera and uncertainty over generic boundaries. The Asian species of Orchideae, in particular, have been subject to repeated changes of generic placement from 2012 onwards.
Diseae is an orchid tribe in the subfamily Orchidoideae. It was recognized in Genera Orchidacearum volume 2, which was published in 2001. It consisted of 12 genera in five subtribes. In molecular phylogenetic studies that were published after 1999, it was shown that Diseae is paraphyletic over the tribe Orchideae. In a classification of orchids that was published in 2015, Diseae was not recognized, but was instead placed in synonymy under Orchideae.
Coryciinae is a subtribe of orchids that has been differently defined and placed in the two classification systems that are currently in use for orchids. Genera Orchidacearum, which is currently the definitive work on orchid taxonomy, delimits Coryciinae as consisting of five genera: Disperis, Evotella, Ceratandra, Pterygodium, and Corycium, and it places Coryciinae in the mostly African tribe Diseae, along with four other subtribes: Brownleeinae, Huttonaeinae, Disinae, and Satyriinae. The genera of Coryciinae are small to medium in size and the number of species in each genus is as follows: Disperis (78), Pterygodium (19), Corycium (15), Ceratandra (6), and Evotella (1).
Disinae is a subtribe of orchids that has been differently defined and placed in the two classification systems that are currently in use for orchids. Genera Orchidacearum, which is currently the definitive work on orchid taxonomy, delimits Disinae as consisting of two closely related genera, Disa and Schizodium, and it places Disinae in the mostly African tribe Diseae, along with four other subtribes: Brownleeinae, Huttonaeinae, Coryciinae, and Satyriinae. In the classification for orchids that was published by Chase et alii in 2015, Schizodium was placed in synonymy under Disa, while Pachites and Huttonaea were transferred to Disinae. In Genera Orchidacearum, Pachites and Satyrium form the subtribe Satyriinae, and Huttonaea is the sole genus in the subtribe Huttonaeinae. The transfer of Pachites and Huttonaea to Disinae by Chase et alii (2015) was done with considerable doubt, and was based upon uncertainty about the relationships of these two genera. In 2009, a molecular phylogenetic study found only weak statistical support for a sister relationship between Huttonaea and Disa.
Platanthera carnosilabris is a species of flowering plant in the orchid family Orchidaceae, native to south-central China.
Hemipilia farreri is a species of flowering plant in the family Orchidaceae. It is endemic to China, where it is found from south-eastern Tibet to north-western Yunnan.
Hemipilia tibetica is a species of flowering plant in the orchid family Orchidaceae, which is endemic to China. It is found from south-eastern Tibet to south-central China.
Hemipilia trifurcata is a species of flowering plant in the orchid family Orchidaceae. It is endemic to south-central China.
Hemipilia wenshanensis is a species of flowering plant in the family Orchidaceae. It is endemic to south-central China (Yunnan).
Hemipilia compacta is a species of flowering plant in the family Orchidaceae, native to south-central China.
Hemipilia pinguicula is a species of flowering plant in the family Orchidaceae. It is native to south-eastern China.