FLORA OF VIETNAM. Pilea platanifolia Wight. N. Vietnam, Prov. Cao Bang, distr. Tra Linh, municipalite Quoc Toan,. vicinity of Thang Heng and Lung Tao villages near Thang Heng lake. Closed evergreen broadleaved primary forest on steep slopes and bluffs. of limestone ridges and mesas at 550 m alt. Epilitic herb on shadow vertical limestone bluffs. Common. No VH 4952  25-27.05.1997. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 5803-96). . Collectors: L. Averyanov, N.T. Hiep