FLORA OF VIETNAM. Huperzia serrata (Thunb.) Trevis. S. Vietnam, Prov. Lam Dong, 14 km to NNW from Dalat city (N 12° 05', E 108° 22'). Primary closed mixed forest with Pinus kesiya and P. krempfii at 1740-1760 m alt. Terrestrial herb. Common in shadow places. No VH 2560  11.03.1997. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 5803-96). . Collectors: L. Averyanov, N.Q. Binh, N.V. Duy, P.K. Loc