Fam. Polypodiaceae s.l.

Cyclosorus sp.

N.Vietnam, Ha Tinh Prov., Huong Son Distr., Son Hong Municipality, around point 18º34'06''N, 105º11'40''E. Primary broad-leaved evergreen riparian forest with Platanus kerrii and Duabanga grandiflora along rocky Song Con river valley composed with shale and gray sandstone at elevation 250-300 m a.s.l. Terrestrial and lithophytic fern on shady rocks of stream bluff. Common.

No HAL 5366 12 May 2004

Collectors: P.K.Loc, L.Averyanov, P.V.The, N.T.Vinh.