Laos, Khammoune prov., Boualapha distr., Vang Maner village, Palai mountain area, around point 17°30'13.6"N, 105°49'23.9"E, 520 m a.s.l. 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 300-500 m a.s.l. Terrestrial herb to 0.5 m tall on shady rocky slope. Flowers white with blue tint. Occasional. 8 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 755.
Record creation: 2019-01-23, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01049281 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01049281