N.Vietnam, Cao Bang Prov., Trung Khanh Distr., Ngoc Khe Municipality, Pac Nga village, around point 22º54'59''N, 106º31'44''E, at elevation 800-850 m a.s.l. Remnants of primary broad-leaved and coniferous forest on ridge tops and on very steep slopes and cliffs of rocky ridges and mesae composed with light gray solid marble-like highly eroded crystalline limestone. Lithophytic herb on narrow shelves and in crevices of shady vertical cliffs. Leaves deep green / light green tessellated above, deep dirty purple-violet below. Rare.
Record creation: 2021-03-24, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01090601 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01090601