Stelis umbonis Luer & Hirtz 2007 SECTION Stelis TYPE Drawing by © Carl Luer
Common Name The Knob Stelis [refers to the callus on the dorsum of the lip]
Flower Size .2" [5 mm]
Found in Loja province of Ecuador at elevations around 3000 meters as a mini-miniature sized, cold growing, caespitose epiphyte with erect, stout ramicauls enveloped by 2 loose tubular sheaths and carrying a single, apical, erect, coriaceous, elliptical, obtuse to round, cuneate below into the petiolate base leaf that blooms in the summer on an erect, arising through a spathe from an annulus below the apex of the ramicaul, lax, distichous, 4.4" [11 cm] long including the 1.2" [3 cm] long peduncle, successively 2 to 3, many flowered inflorescence with infundibular, acute, shorter than the ovary floral bracts and carrying Dark Yellow, glabrous flowers.
"Distinguished by a combination of frequently seen features. The elliptical leaves, about as long as the stout ramicauls are surpassed by a loose, distichous, flexuous raceme with abouta dozen flowers with 2 to3 open simultaneously. The sepals are glabrous and transversely ovate; the petals arte lunate with a well defined transverse callus and the lip is short and transverse witha single, prominent callus on the dorsum." Luer 2007
Synonyms
References W3 Tropicos, Kew Monocot list , IPNI ;
Icones Pleurothallidinarum Vol XXIX A Third Century of Stelis of Ecuador Systematics of Apaoda-Prorepentia Luer 2007 drawing fide ;
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