FLORA OF VIETNAM
Rubiaceae
Ophyorrhiza sp.

N. Vietnam, prov. Ha Giang, distr. Dong Van, municipality Ho Quang
Phin, vicinities of Ta Xa village, 14-16 km to SSW of Dong Van town (N
23°16′ E 105°22′). Primary very wet mossy cloud mixed forest (with
domination of Tsuga chinensis and Pinus kwangtungensis) along tops of
karst remnant limestone ridge at 1550-1600 m elev. Shrublet 0.5-1 m hg
on shady mossy vertical cliffs. Flowers white. Not common.

CBL 1765 28 April 1999

International Botanical Expedition of the U.S.A. National Geographic
Society (grant No 6300-98)

Collectors: P.K.Loc, P.H.Hoang, Averyanov L.