Ponerorchis compacta

Ponerorchis compacta is a species of flowering plant in the family Orchidaceae, native to south-central China (west Sichuan).
Taxonomy.
The species was first described in 1924 by Rudolf Schlechter, as "Neottianthe compacta". A molecular phylogenetic study in 2014 found that species of "Neottianthe", "Amitostigma" and "Ponerorchis" were mixed together in a single clade, making none of the three genera monophyletic as then circumscribed. "Neottianthe" and "Amitostigma" were subsumed into "Ponerorchis", with this species becoming "Ponerorchis compacta".