Vientiane prov., Vang Vieng distr., Oa Hom village, around point 19°05'57.0"N 102°23'19.9"E. Secondary broad-leaved evergreen and semideciduous dry forest with on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 650-750 m a.s.l. Terrestrial herb 0.5 m tall on shady rocky slope. Not rare. LA-VN 1550 22 March 2017. Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.
Coordinates (geographic position):19° 5′ 57″ N, 102° 23′ 19.9″ E ±1000 mRecord creation: 2019-02-22, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01049869 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01049869