FLORA OF LAOS Orchidaceae Arachnis labrosa (Lindl. & Paxton) Rchb.f.?
Vientiane Prov., Kasi Distr., Thong Mout village, around point 19°26′51.5”N 102°07′45.8”E.
Primary broad-leaved evergreen forest on very steep rocky slopes and on vertical cliffs of remnant highly eroded rocky limestone mountains composed by solid crystalline stratified limestone at elevation 1550-1650 m.
Lithophytic vine to 2 m long with inflorescence to 1 m long. Common.