FLORA OF VIETNAM
Acanthaceae
Hygrophila ringens (L.) Steud.

Det. Dr Kaj Vollesen 26.10.2004

N. Vietnam, Thai Nguyen prov., Vo Nhai distr., Than Sa municipality,
vicinities of Kim Son village (N 21°48′ E 105°54′), 23.3 km to 18° of
Thai Nguyen city. Shrublet or forb up to 1 m lg on open wet limestone
rocks along stream at 40-60 m a.s.l. Flowers light violet. Not rare.

NTH 3793 23 Oct. 1999

Collectors: N.T. Hiep, P.K. Loc, L. Averyanov.