Dendrochilum hastilobum J.J.Wood 1995 publ. 1994

SUBGENUS Platyclinis SECTION Cruciformia

Drawing by Susanna Stuart Smith

Common Name The Equally Triangular Lobed Dendrochilum [refers to the triangular lobes of the lip]

Flower Size .14" [3.5 mm]

Found in Sarawak Borneo in lower montane ridge forests at elevations of around 1560 meters as a mini-miniature to miniature sized, cool growing epiphyte with a branching rhizome giving rise to cylindrical to fusiform, .2 to .6" [5 to 1.5 cm] between each, erect, finely furrowed and rugose when dried, pseudobulbs enveloped basally by 3, brown, unspotted, soon becoming fibrous cataphyls and carrying a single, apical, linear-ligulate to narrowly elliptic, obtuse, mucronate, to subacute, coriaceous, 3 to 4 msin nerved, narrowing below into the narrow, sulcate, petiolate base leaf that blooms in the summer on a erect, curving, peduncle terete, filiform, .72 to 1.12" [1.8 to 2.8 cm] long, naked, rachis quadrangular, 1.4 to 3" [3.5 to 7.5 cm] long, laxly 9 to 20 flowered inflorescence with ovate-elliptic, acute to acuminate, longer than the ovary floral bracts and carrying greenish brown flowers.

Closely related to D dolichobrachium but D hastilobum differs in the larger leaves and larger flowers with a larger, hastate lip midlobe and a very short column foot.


References W3 Tropicos, Kew Monocot list , IPNI ; Orchids of Sarawak Beaman & Wood etal 2001; Dendrochilum of Borneo Wood 2001 drawing fide; Orchids of Sarawak Beaman, Wood & Beaman etal 2001;