FLORA OF VIETNAM
Microsorum sp.

N. Vietnam, prov. Cao Bang, distr. Ha Lang, municipality Thang Loi, vicinities of Lung Sam village (N 22°45′ E 106°42′). Secondary wet evergreen broadleaved forest with remnants of primary elements on steep slopes and bluffs of karst remnant limestone ridge at 500-550 m elev. Woody vine about 10 m lg in open place. Lithophyte creeping fern on open wet mossy rocks. Very common. CBL 1643 23 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.