FLORA OF VIETNAM Orchidaceae Paphiopedilum dianthum Tang et F.T.Wang
Dien Bien Prov., Muong Cha Distr., Mua Ngai Municipality, around point 21°52′19”N 103°10′01”E.
Remnants of primary 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 1150-1250 m a.s.l.
Rosulate lithophytic herb on shady mossy rocky outcrops and on on vertical mossy cliffs. Not rare.