FLORA OF VIETNAM. Pilea peploides Hook. et Arn. N. Vietnam, Prov. Cao Bang, distr. Tra Linh, municipalite Quoc Toan,. vicinity of Thang Heng and Lung Tao villages near Thang Heng lake. Open dry primary mixed forest with domination of Keteleeria fortunei on. tops of limestone mesas and ridges at 800-1000 m alt. Terrestrial and epilitic herb up to 1 m hg on open rocks. Rare, but. locally (on some peaks) abundant. No VH 4958  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