Calanthe undulata J.J.Sm. 1903 SUBGENUS Calanthe SECTION Aceratochilus

Photo by P J Cribb


Photo by J J Wood 1994

TYPE Drawing

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

Full shade Hot Warm Spring Fall

Common Name The Undulate Calanthe

Flower Size .72 to .8" [1.8 to 2 cm] long

Found in Borneo in wet, sandy podosol forestsat elevations around 400 to 1000 meters as a large sized, hot to warm growing terrestrial with a vertical, short, thick rhizome giving rise to stems carrying 4 to 6, plicate, dark green, narrowly elliptic, acuminate, gradually narrowing below into the 2 to 6" [5 to 15 cm] long, petiolate base leaves that blooms in the spring on an erect, dark green, furfuraceous with dark brown, stellate hairs, peduncle to 6 to 13.6" [15 to 34 cm] long, several, imbricate bracts, rachis angular, sulcate, to 12 to 13.6" [30 to 34 cm] long, 18 to 27.2" [45 to 68 cm] long overall, densely 20 flowered inflorescence with narrowly elliptic, acute, upper bracts smaller, deciduous floral bracts.


References W3 Tropicos, Kew Monocot list , IPNI ; Orchidaceae of German New Guinea Schlechter 1912; A Checklist of the Orchids of Borneo J J Wood 1994 drawing/photo fide; Orchids of Sarawak Beeman, Wood & Beaman etal 2001; The Genus Calanthe Cribb & Clayton 2013 drawing/photo fide;