FLORA OF VIETNAM Orchidaceae Dendrobium sp. (similar to P 1989)
Hoa Binh Prov., Tan Lac Distr., Ngo Luong Municipality, Tram Hai Village, Dong Xien mountainous range, ca. 1 km to S of coordinate ca. 20°28′15”N 105°17′21”E, locality of FPD no 3 of Ngoc Son-Ngo Luong NR.
In heavily logged evergreen broad-leaved woodlands and scrubs on top ridges of limestone mts., at elevation about 800 m a.s.l. Epiphyte. Stem very thin, ca. 1 mm in diam., without leaves. Sterile. Rare.