Lam Dong Province, wild collected plant cultivated in Nguyen Phi Tam private garden in Dalat Town. Photos made on 6 December 2021 by Truong Ba Vuong & Nguytn Phi Tam, BV 1309.
Note: Lip of B. nigrescenecs surface glabrous on apical half, margin villose, 2 high keel run from base to bellow middle form deep channel, channel glabrous, margin of keels densely white hairs, apical surface of lip verrucose.
Record creation: 2021-12-15, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01123034 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01123034