FLORA OF VIETNAM. Agrostophyllum callosum Reichenb.f. S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay,. 40 km to NE from Dalat city. Closed primary evergreen broadleaved wet. mt forest on SW macroslope of Hon Giao mt. ridge at 1500-1650 m alt. (N 12° 11', E 108° 43'). Epiphyte. Not rare. No VH 4420 26.04.1997. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 5803-96). . Collectors: L. Averyanov, N.Q. Binh, N.T. Hiep