N. Vietnam, Hoa Binh prov., Da Bac distr., to the SW of Doan Ket village (20°54′01′'N, 105°04′19′'E). Primary broad-leaved evergreen forest on very steep slopes of remnant highly eroded limestone ridge at elev. 700-750 m a.s.l. Terrestrial yellowish-brown saprophyte among shady rocks. Flowers light brown. Rare. HAL 329 29 March 2001 Collectors: N.T.Hiep, L.Averyanov, N.T.Vinh, D.T.Doan.
Coordinates (geographic position):20° 54′ 1″ N, 105° 4′ 19″ E ±1000 mRecord creation: 2020-09-12, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01069806 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01069806