N. Vietnam, Prov. Cao Bang, distr. Tra Linh, municipalite Quoc Toan, vicinity of Thang Heng and Lung Tao villages near Thang Heng lake. Remnant closed evergreen primary broadleaved forest on dteep slopes and bluffs of limestone ridges and mesas near karst lake at 500-65- m alt. Epilite in crevices of shadow rocks. Leaves whitish-grey with deep green venation. Rare.
No VH sine N 27 May 1997
International Botanical Expedition of the U.S.A. National Geographic
Record creation: 2020-11-04, Аверьянов Леонид Владимирович. Processing status: work_status_1Citation: Specimen LE 01088156 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01088156