Bac Kan Province, Ba Be District, central part of Ba Be National Park.
Dray evergreen broad-leaved old secondary forest with domination of Burretiodendron hsienmu, Streblus asper and Arenga pinnata on crystalline highly eroded rocky limestone along Ba Be River at elevation about 250 m a.s.l. Terrestrial herb in shady wet place in humid valley between limestone hills. Leaves dark uniform green. Not common.
17 November 2022, Nguyen Huu Cuong, Cao Xuan Hai, L. Averyanov, T. Maisak, AL 1676.
Record creation: 2023-01-13, Galina Savich, PhotoScan D2.. Processing status: work_status_1Citation: Specimen LE 01169957 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01169957