Lang Son Province, Bac Son District. Secondary scrub and secondary evergreen broad-leaved forest on remnant limestone hills composed with highly eroded solid crystalline limestone at elevation 600-700 m a.s.l. Lithophytic and epiphytic herb with ascending stem to 1 m long on and near hill top. Presently very rare. 13 November 2022, Nguyen Huu Cuong, Chu Ngoc Quan, L. Averyanov, T. Maisak, AL 1642.
Fl. in cult. on 24 04 2023, L. Averyanov AL1624. Flowers light yellow with purple spots.
Record creation: 2023-04-24, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01124197 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01124197