VIETNAM

ORCHIDACEAE

Callostylis rigida Blume

Hoa Binh

Mai Chau District, Van Mai Municipality along road between Van Mai and Thanh Hoa, approx. 2 km SW of Van Mai municipal buildings, then trail E between 2 ridges approx. 5 km E then SW to top of near two ridges. Collections from disturbed secondary forest on ridgetop with bamboo and lack of mosses on rocks. Remnants of primary forest and herbaceous vegetation on upper slopes, on limestone and shale soils with large, anciently eroded marble-like limestone.

20°34'17"N 105°01'58"E 648 m

Occasional, lithophytic, forming large

chains of pseudobulb to 1.5 m; sterile, all green.

14 Dec 2002

D.K. Harder, N.T. Hiep & L.V. Averyanov

8172

Supported by National Geographic Society

MISSOURI BOTANICAL GARDEN HERBARIUM (MO)