Section Cortusoides Link to Flora of China description Type specimen:
Clarke 27784 resides at Kew herbarium (specimen K000750314) Synonym: P. normaniana Kingdon-Ward, Annals of Botany 44:123, 1930. Type specimen:
Kingdon-Ward 8295 resides at Kew herbarium (specimen K000750412) Synonym: P. eucyclia W.W. Smith & Forrest, Notes RBG Edinb. 14:41, 1923. Type specimen: Forrest 21632 resides at Royal Botanic Garden Edinburgh herbarium (specimens E00024417 and E00024418)
P. vaginata is currently described as having three subspecies: P. vaginata ssp. vaginata, P. vaginata ssp. eucyclia and P. vaginata ssp. normaniana. This is a wide spread species from Sikkim, Bhutan, NE India, Tibet, Yunnan to N Myanmar.