FLORA OF VIETNAM Orchidaceae Miguelia somai (Hayata) Aver.
Tuyen Quang Prov., Na Hang Distr., Sinh Long Municipality, Khuoi Phin village, around point 22°38′21.9″N, 105°20′43.5″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.
Herbaceous succulent creeping lithophytic and epiphytic vine to 15 m long with elliptic leaves to 30 cm long. Locally common.