Peristylus hamiltonianus (Lindl.) Lindl. 1835

Drawing by Seidenfaden and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Common Name Hamilton's Peristylus [English Orchid Collector 1800's]

Flower Size .16" [4 mm]

Found in Assam, the eastern Himalayas, Nepal and Thailand at elevations of 1500 to 2000 meters aas a small sized, cool growing terrestrial with glabrous stems carrying 4 to 7, cauline, scattered throught the middle of the stem, linear-lanceolate, acuminate, mucronate leaves and 1 spreading to suberect, lanceolate, acuminate sterile bract that blooms in the summer on a terminal, erect, 4 to 6" [10 to 15 cm] long overall, rachis 1.8 to 5.4" [4.5 to 13.5 cm] long, densely many flowered inflorescence with filiform, lanceolate, caudate-acuminate much longer than the flowers floral bracts

Synonyms Habenaria hamiltoniana (Lindl.) Hook.f. 1890; *Herminium hamiltonianum Lindl. 1832; Orchis micranthema Buch.-Ham. ex Wall. 1832

References W3 Tropicos, Kew Monocot list , IPNI ; Indian Orchids: Guide to Identification and Culture Pradhan 1976; Dansk Botanisk Arkiv Bind 31 #3 Orchid Genera in Thailand V Orchidoideae Seidenfaden 1977 drawing fide; Orchids of Bhutan Pearce & Cribb 2002; Flora of Thailand Vol 12 Part 1 Pedersen, Kurzweil, Suddee and Cribb 2011 drawing fide;