S. Vietnam, Kontum Prov., Kon Plong Distr., Hieu Municipality, Mang La forest enterprise (14°39′N, 108°25′E). Open grass-sedge spring water swamp along streamlet among secondary shrubs on sandy-clay soils at elev 1000. Not common, but locally abundant.
VH 5775 27 04.2000
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6383-98)