Laos, Khammoune prov., Boualapha distr., Nong Seng village, Chanh Daeng mountain, around point 17°31'11.1"N, 105°46'41.4"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 400-600 m a.s.l. Achlorophyllous terrestrial herb on shady rocky slope near mountain base. Flowers light violet. Not common. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 995.
Coordinates (geographic position):17° 31′ 11.1″ N, 105° 46′ 41.4″ E ±1000 mRecord creation: 2019-01-13, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01048693 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01048693