Ponerorchis capitata
Ponerorchis capitata (synonym "Amitostigma capitatum") is a species of plant in the family Orchidaceae. It is endemic to China, known only from Sichuan and Hubei. It produces white flowers. Taxonomy. The species was first described in 1936 by Tsin Tang and Fa Tsuan Wang, as "Amitostigma capitatum". A molecular phylogenetic study in 2014 found that species of "Amitostigma", "Neottianthe" and "Ponerorchis" were mixed together in a single clade, making none of the three genera monophyletic as then circumscribed. "Amitostigma" and "Neottianthe" were subsumed into "Ponerorchis", with this species becoming "Ponerorchis capitata". References.