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Tsaiorchis keiskeoides
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Orchidoideae
Genus:	Tsaiorchis
Species:	T. keiskeoides
Binomial name
	Tsaiorchis keiskeoides; (Gagnep.) X.H.Jin, Schuit. & W.T.Jin
Synonyms
	Habenaria keiskeoides Gagnep. ; Amitostigma keiskeoides (Gagnep.) Garay & Kittr. ;

Tsaiorchis keiskeoides is a species of flowering plant in the family Orchidaceae, native to northern Vietnam.^[1]

Taxonomy

The species was first described in 1931 by François Gagnepain, as Habenaria keiskeoides. It was transferred to the genus Amitostigma in 1985.^[1] A molecular phylogenetic study in 2014 treated Habenaria keiskoides as synonymous with Tsaiorchis neottianthoides. Although Tsaiorchis was shown to be close to some other genera, including Ponerorchis when expanded to include Amitostigma, it was regarded as sufficiently distinct to be maintained as a separate genus.^[2] Sources such as the World Checklist of Selected Plant Families treat Tsaiorchis keiskeoides as a distinct species from Tsaiorchis neottianthoides.^[1]

^ ^a ^b ^c ^d ^e "Tsaiorchis keiskeoides", World Checklist of Selected Plant Families, Royal Botanic Gardens, Kew, retrieved 2018-03-25
^ Jin, Wei-Tao; Jin, Xiao-Hua; Schuiteman, André; Li, De-Zhu; Xiang, Xiao-Guo; Huang, Wei-Chang; Li, Jian-Wu & Huang, Lu-Qi (2014), "Molecular systematics of subtribe Orchidinae and Asian taxa of Habenariinae (Orchideae, Orchidaceae) based on plastid matK, rbcL and nuclear ITS", Molecular Phylogenetics and Evolution, 77: 41–53, doi:10.1016/j.ympev.2014.04.004, PMID 24747003