Dendrochilum adpressibulbum J.J.Sm. 1922 SUBGENUS Platyclinis SECTION Eurybrachium Drawing by J J Smith and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Part shade Cool

Common Name The Adpressed Pseudobulb Dendrochilum

Flower Size .292" [7.3 mm]

Found in Sumatra at elevations of 1800 to 2500 meters as a small sized, cool to cold growing epiphyte with pendulous, freely branching rhizome giving rise to 3.4" [8.5 cm] between each, adopressed to the rhizome, terete pseudobulbs carrying a single, apical, erect, ovate-oblong, gradually long-acuminate, petiolate base leaf that blooms on a slender peduncle that is 1.6" [4 cm] long, rachis nodding, quadrangular in cross-section, 4.4" [11 cm] long, arising from immature pseudobulbs, as the leaves are just appearing, many flowered inflorescence

J J Smith put this one near D incurvibrachium but D adpressibulbum has shorter, semi-terete pseudobulbs that are adpressed tothe rhizome, , shorter and laxer inflorescence, triangular, acute floral bracts, larger flowers and a broader and different hypochile, He also compared it to D elegans which also has ovate leaves but D adpressibulbum has a shorter peduncle, a much broader basal part of the lip than the narrowl oblong mid-lobe, and linear stelids which are much longer than the apical wing.


References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of Sumatra J B Comber 2001;