Bac Kan Province, Ba Be District, Nam Mau Municipality, central part of Ba Be National Park. Rather dray evergreen broad-leaved old secondary forest with domination of Burretiodendron hsienmu and Streblus asper on crystalline highly eroded rocky limestone at elevation 600-750 m a.s.l. Terrestrial and lithophytic herb to 1 m tall on shady rocky steep slope. Flowers blue. Not common.
16 November 2022, Nguyen Huu Cuong, Cao Xuan Hai, L. Averyanov, T. Maisak, AL 1660.
Record creation: 2022-12-15, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01123650 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01123650