Luang Prabang prov., Pon Xay distr., Houay Man village, Phou Tham Keo Mountain, around point 19°57'44.2''N 102°25'45.8''E. Degraded primary evergreen and semideciduous forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 500-650 m a.s.l. Terrestrial herb on shady rocky slope. Flower buds white with purple apical half. Not common. LA-VN 2077 4 April 2017 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Vichith Lamxay, Koudkeo Phommachanh, Phizar Sayalath, Keooudone Souvannakhoummane.
Coordinates (geographic position):19° 57′ 44.2″ N, 102° 25′ 45.8″ E ±1000 mRecord creation: 2019-05-09, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01054496 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01054496