FLORA OF VIETNAM Acanthaceae Justicia procumbens L. Det.: Yun-Fei, Deng 2008
N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Yen Lac, vicinities of Yen Lac village (N 22°44′ E 105°50′), about 44 km to NWW from Cao Bang town. Secondary open shrubs among limestone rocks on alluvial foothills of limestone remnant ridge at 1100 m alt. Prostrate herb in open wet places. Flowers light violet. Common weed in the area.
CBL 432 18 Nov. 1998
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)