FLORA OF VIETNAM Orchidaceae Paphiopedilum coccineum Perner et R.Herrmann
Dien Bien Prov., Tua Chua Distr., Sin Chai Municipality, around point 22°03′38”N 103°19′56”E.
Primary humid evergreen broad-leaved forest on very steep rocky slopes and on tops of remnant mountain composed with highly eroded marble-like solid crystalline limestone at elevation 1350-1500 m a.s.l.
Clustering rosulate lithophytic herb on vertical shady cliff. Median petal with purple-red center. Rare.