FLORA OF VIETNAM
Orchidaceae
Dendrobium langbianense Gagnep.

Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, Khuoi Phin village, around point 22°38′21″N, 105°20′28″E.

Primary evergreen mixed humid forest on rocky limestone on highly eroded karstic hills composed with gray solid marble-like limestone at elevation 1100-1200 m a.s.l.

Canopy epiphyte. Uncommon.

30 September 2013 CPC 5336a
L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, D.V.Cuong, N.V.Truong.T.Maisak, L.Osinovets

Flowered in cult. 25 December 2014. Flowers odorless, light greenish, lip lobws with dull purplish veins. Photos.