N. Vietnam, prov. Cao Bang, distr. Nguyen Binh, municipality Ca Thanh, vicinities Ca Lu village, about 7-8 km to SE from Yen Lac village (N 22ø44' E 105ø50'), about 38 km to NWW from Cao Bang town. Old open mixed semideciduous and coniferous (with Pseudotsuga brevifolia) primary forest along tops of limestone ridge and on steep slopes near ridge tops at 1350-1450 m alt. Epilite herb on bluffy steep slopes. Flowers: tepals yellowish-green, lip pale light yellowish-brown olive. Not rare.
No CBL 558 21 Nov. 1998
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)
Collectors: Averyanov L., P.K.Loc, N.X.Tam.
Coordinates (geographic position):22° 44′ N, 105° 50′ E ±1000 mRecord creation: 2020-10-03, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01069597 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01069597