Laos, Khammouane prov., Boualapha distr., Nong Seng village, southern sandstone slopes of Phou Chuang (Poujeuang) Mt. around point 17°34′13.3″N 105°47′57.5″E.
Primary evergreen broad-leaved dry forest at elev. 700-1000 m a.s.l.
Terrestrial and lithophytic herb to 1.5 m tall on open rocky slope along stream. Flowers white, odorless, median tepal finely speckled with red in center, in median part of center with bright yellow spt. Rhizome cut with strong zinger fragrance. Not rare.
3 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 588.