Dendrobium pleasancium P.O'Byrne & J.J.Verm. 2003 SECTION Aporum

Plant and Flower

Photos by © Peter O'Byrne and The Swiss Orchid Foundation at the Jany Renz Herbaria Website


Common Name or Meaning Pleasance's Dendrobium [American Nurseryman current]

Flower Size .48" [1.2 cm]

Found in Kalimantan Borneo in hill forests and mixed lowland dipterocarp forests at elevations of 100 to 300 meters as a miniature to medium sized, hot growing epiphyte with spreading, bilaterally strongly laterally compressed, hardly sinuous, leafy throughout pseudobulbs carrying bilaterally strongly compressed, obliquely ovate, triangular, acute to acuminate, attenuate, at an acute angle tothe stem, coriaceous leaves that blooms on a lateral ojn the distal portion of the stem, arising through dry brown bracts from which 2 to 3 green, acute bracts protrude, successively single flowered inflorescence carrying downward facing flowers.

Closest to D sabahense but D pleasanicum differs in being leafy to the apex of the stem and in having a transverse callus between the side lobes that extends across the whole of the claw. The lip is similar to D compressistylum but that species is three lobed above, has a longer basal claw and has a callus between the side lobes that does not extend onto the mid-lobe.

Synonyms Dendrobium tetrabrachium J.J.Wood 2008

References W3 Tropicos, Kew Monocot list , IPNI ; *Malaysian Orchid Review 37: 91 P.O'Byrne & J.J.Verm 2003 photo/drawing fide; Malesian Orchid Journal Vol 1 Wood pg 138 2008 as D tetrabrachium drawing good; Malesian Orchid Journal Vol 6 2010; Dendrobium of Borneo Wood 2014 photo/drawing fide