Hypericaceae Juss. Hyppericum japonicum Thunb.ex Murr. S. Vietnam, Prov. Kontum. NW slopes of Ngoc Linh mountain system at 1600 m alt. Secondary short grass grasslands in wet places. Herb up to 0.3 m high. Leaves reddish. Flowers yellow. VH 423 02.03.1995
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5094-93)
Participants: L. Averyanov, N.T. Ban, N. Q. Binh, A. Budantzev, L. Budantzev, N.T. Hiep, D.D. Huyen, P.K. Loc, N.X. Tam, G. Yakovlev