FLORA OF VIETNAM
Orchidaceae
Dendrobium longicornu Lindl.

Cao Bang Prov., Nguyen Binh Distr., Ca Thanh Municipality, Ta Pin village, around point 22°43′56.4″N, 105°51′16.4″E.

Primary coniferous forest with Pseudotsuga sinensis along highly eroded rocky limestone ridge at elevation about 1400 m a.s.l.

Epiphyte on mossy trees in shady places along ridge. Not rare.

3 October 2013 CPC 5372 ass. / TM 1028
L.Averyanov, N.T.Hiep, L.M.Tuan, N.S.Khang, T.Maisak, L.Osinovets