Ha Giang Province, Quan Ba District, Quyet Tien Commune, in forest, flowers can be similar to B.laxiflorum, but B. kwangtungense smaller in habit, fewer number of flowers, 3 keels fused together form a large callus on adixialsurface of lip. 27 December 2020, Truong Ba Vuong, Bui Van Huong, Vang Di Thao, BV 956 (VNM).
Record creation: 2021-02-26, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01090066 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01090066