Stelis tristyla Lindl. 1838 SECTION Stelis Photo by The Orchidees en Nord Website

Drawing Drawing by Carl Luer and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Common Name The Three Pillared Stelis [refers to the three lobes of the column - two stigma and the rostellum]

Flower Size .4" [1 cm]

Found in Brazil, Venezuela and Ecuador at elevations of 1500 to 1700 meters as a small sized, cool growing epiphyte with erect, stout ramicauls enveloped by a loose, tubular sheath below the middle and 2 others below and carrying a single, apical, erect, coriaceous, elliptical, obtuse, cuneate below into the subpetiolate base leaf that blooms in the spring and summer on an erect, congested, distichous, 10" [to 25 cm] long including the to 4" [to 10 cm] long peduncle, mostly simultaneously many flowered inflorescence arising through a spathe from an annulus near the apex of the ramicaul with thin, oblique, acute floral bracts.

Synonyms Stelis casanaensis Schltr. 1929; Stelis trianguliflora Schltr. 1929; Stelis zonata Rchb.f. 1883

References W3 Tropicos, Kew Monocot list , IPNI ; Flora de Venezuela Volumen XV Parte 2 Foldats 1970 drawing good; Orchidaceae Brasilense Band 1 Pabst & Dungs 1976 drawing ok; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as S grossilabris not drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as S zonata not = drawing fide; Orquideas de Bolivia Vol 1 Vasquez & Ibisch 2000 as S casanaensis; Orquideas de Bolivia Vol 1 Vasquez & Ibisch 2000 as S trianguliflora; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003 drawing ok; Native Ecuadorian Orchids Vol 5 Dodson 2004 photo hmm; Orchidaceae Stelis Swartz , A Compendium Duque 2008 drawing fide; Icones Pleurothallidinarum Vol XXX Luer 2009 drawing fide

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