FLORA OF LAOS Aristolochiaceae Aristolochia sp. (or Thottea sp.?)
Kham Mouan Prov., Bounlapha Distr., Thong Sam village, Hinnam No Protected Area, Pu Pha Song Mt. composed by sandstone, around point 17°35′13.2”N 105°47′49.8”E.
Primary evergreen broad-leaved and mixed forest on W macroslope at elevation from 500 m to the mountain top elevated to 1425 m.
Semi-woody vine 5 m long in shady places along stream at elevation 1100 m. Not common.