Luang Prabang prov., Pon Xay distr., between Houay Man and Nam Bo villages, Phou Hua Ben Toc Mountain, around point 19°57'33.1''N 102°25'25.8''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 steep shady rocky mountain slope. Flowers green. Occasional. LA-VN 2122 5 April 2017 Photos 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′ 33.1″ N, 102° 25′ 25.8″ E ±1000 mRecord creation: 2019-03-31, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01050001 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01050001