FLORA OF VIETNAM Orchidaceae Paphiopedilum dianthum Dien Bien Prov., Dien Bien Distr., Na U Municipality, Ca Hau village, around point 21°12′51”N 102°57′20”E.
Highly destroyed primary closed evergreen broad-leaved submontane forest on rocky crystalline marble-like rocky limestone at elevation 1100-1200 m a.s.l.
Clustering rosulate lithophyte on mossy rocks near rocky top of mountain. Occasional.