Pleurothallis silverstonei Luer 1992 SUBGENUS Scopula Luer 1986

Photo by Eric Hunt

Another Flower in situ Parque nacianal Tatama Choco Colombia 2300 meters 8/17

Photo by Jay Pfahl

Inflorescence and Plant

Photo by Lourens Grobler

TYPE Drawing

TYPE Drawing by Carl Luer

Common Name Silverstone's Pleurothallis [Original Collector of species]

Flower Size .4" [1 cm]

Found in Risaralda and Valle de Cauca departments of Colombia in dense primary cloud forests at elevations of 2400 to 2500 meters as a small sized, cold growing epiphyte with erect, stout, laterally compressed towards the apex ramicauls enveloped basally by 2 to 3 and another below the middle sheaths and carrying a single, apical, erect, coriaceous, elliptical, obtuse, shortly acuminate basally leaf that blooms in the winter, spring and summer on an erect, arising from the middle of the leaf, dense fascile of numerous, single flowered inflorescence with tubular, much shorter than the pedicel floral bracts.

"A large species with the ramicaul embedded within the lower half of a large, elliptical leaf then the vascular bundle of the inflorescence emerges and is a free standing to near the apex of the leaf. At the tip of the free bundles a densely fasciculate mass of peduncles and pedicels accumulates. The flowers are produced singly and successively. The flowers are most similar to those of Pleurothallis penicillata with the synsepal of both species being basally saccate. The lip of P silverstonei is considerably larger with rounded, erect, latetral margins." Luer 1992

Synonyms Colombiana silverstonei (Luer) Luer 2006

References W3 Tropicos, Kew Monocot list , IPNI ;

* Icones Pleurothallidinarum Vol IX Systematics of Myoxanthus Luer 1992

Icones Pleurothallidinarum Vol IX Systematics of Myoxanthus Luer 1992 drawing fide;

Native Colombian Orchids Vol 6 COS 1998 photo fide;

Icones Pleurothallidinarum Vol XXVIII A Reconsideration of Masdevallia Systematics of Specklinia Luer 2006 as Colombiana silverstonei