N. Vietnam, Prov. Cao Bang, distr. Nguyen Binh, limestone mountain pass Cao Bac on car road from Hanoi to Cao Bang sity at 400-600 m alt. Secondary shrubs and grass communitys on mountain limestone massif. Palm like treelet with stems up to 0.5 m hg on limestone mt slope in secondary shrubs. Not common. VH 4993 28.05.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)