Son La Province, Thuan Chau Disctrict, Pha Din Pass,
2 June 2020, Truong Ba Vuong, BV 707.
The specimen differs from the true D. aduncum in no hairy back-wall callus, large subglobose callus, glabrous on middle and hairy on back-side; large callus covered almost the lip. Lip adaxial densely white hairs except the callus.
Record creation: 2021-03-17, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01090402 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01090402