FLORA OF VIETNAM. Huperzia serrata (Thunb.) Trevis. S. Vietnam, Prov. Ninh Thuan, distr. Ninh Son, municipalite Phuoc Binh. in 34 km to NE from Dalat city. Closed primary broadleaved forest. along mt ridge between Bi Dup and Gia Rinh mt. mt at 1800-1900 m alt. (N 12° 07', E 108° 42'). Terrestrial herb in shadow places. Not rare. No VH 3585  03.04.1997. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 5803-96). . Collectors: L. Averyanov, N.Q. Binh, P.K. Loc