Bolikhamsai prov., Thaphabat distr., Nam Bon village, Phou Khao Khouay national park, Tad Xai Waterfall, around point 18?27′25.9′'N 103?08′17.5′'E.
Degraded primary and secondary evergreen dry forest along rocky river on eroded sandstone at elev. About 350 m a.s.l.
Terrestrial herb in shady places on sandy soil. Leaves uniform green and sometimes with few unclear yellowish spots. Locally very common.
AL 150 9 December 2015 L.Averyanov, T.Maisak. 2 living plants only.
Flowered in 2 May 2917, Flowers dark dirty purple, stigma purple with radiate white markings. Photos.
Flowered in 8 June 2917, Flowers dark dirty purple, stigma purple with radiate white markings. Photos.
Flowered in 5 March 2918, Flowers dark dirty purple, stigma purple with radiate white markings. Photos. Peliosanthes sp. Phou Khao Khouay National Protected Area to about 40 km NE of Vientiane. Dry evergreen primary and secondary forest along rocky stream on sandstone at elev. 350 m a.s.l. AL 151 9 December 2015 L.Averyanov, T.Maisak. 2 living plants only. Terrestrial herb in shady places on sandy soil. Leaves uniform green. Occasional. Peliosanthes sp. Phou Khao Khouay National Protected Area to about 40 km NE of Vientiane. Dry evergreen primary and secondary forest along rocky stream on sandstone at elev. 350 m a.s.l. AL 152 9 December 2015 L.Averyanov, T.Maisak. 2 living plants only. Terrestrial herb in shady places on sandy soil. Leaves uniform green. Occasional.