Ceratostylis robusta Hook.f. 1890

Plant in Situ Cameron Highlands Malaysia

Photo By David Kuehn

Another Flower Sumatra

Photo By J B Comber

Another Flower Sumatra

Photo By J B Comber

TYPE Drawing

TYPE Drawing By J D Hooker

Common Name The Robust Ceratostylis

Flower Size 3/4" [1.8 cm]

Found in Malaysia and Sumatra at elevations around 1500 to 1650 meters as a small sized, cool growing epiphyte with a long, stout ascending rhizome enveloped by dark brown scarious sheaths and giving rise to a small, erect pseudobulb enveloped by scarious sheaths and carrying a single apical, narrowly lanceolate, acute, midrib prominent beneath leaf that blooms in the winter on a single flowered inflorescence with the peduncle enveloped by a sheath and carrying densely hairy exterior flowers.

The Photos above have flowers that are different yet similar, from that pictured in Comber's Orchids of Sumatra. The Comber specimen has whiter cupped sepals and petals and a much longer rounded lip that appears to be cleft at the apex. This species photo does agree nicely with Hooker's and Seidenfaden's drawings.

References W3 Tropicos, Kew Monocot list , IPNI ; Icones Plantarum Vol 22 Hooker 1892 drawing fide; The Orchids of Penninsular Malaysia and Singapore Seidenfaden & Wood 1992 drawing fide; Orchids of Sumatra Comber 2001 photo fide; Wild Orchids of the Cameron Highlands REACH 2009 photo hmm;