Pleurothallis convoluta Lindl. 1845 SUBGENUS Effusae Luer 2000
Drawing by Carl Luer and The Swiss Orchid Foundation at the Jany Renz Herbaria Website
AND AGAIN 
Common Name The Convolute Pleurothallis [refers to dry leaves in Lindley's Possesion]
Flower Size .2" [5 mm]
Found in Cauca department of Colombia in wet forests at elevations around 1500 to 1800 meters as a small sized, cool growing, caespitose epiphyte with erect, slender ramicauls with a close, tubular sheath below the middle and 2 to 3 others at the base and carrying a single, apical, coriaceous, erect, narrowly linear-elliptical, more or less incurved margins when dried, subacute to obtuse, lightly acuminate, gradually narrowing below into the petiolate base leaf that blooms in the spring and again in the fall on an erect, arising from below the paex of the ramicaul through a narrow spathe from an annulus, loose, distichous, 3.6 to 4" [9 to 10 cm] long, simultaneously several flowered inflorescence with tubular, as long to longer than the pedicel floral bract.
"Distinguished by the several flowered, distichous raceme shorter than the narrowly linear leaves. Some are more or less convolute in the living condition. The sepals are obovate and obtuse, greenish white and long pubescent within. The petals are carinate externally and also obovate with the apices obscurely bilobed. The subpandurate lip is arcuate with erect, broadly rounded erect sides below the middle." Luer 2000
Synonyms Effusiella convoluta (Lindl.) Luer 2007; Humboltia convoluta (Lindl.) Kuntze 1891; Pleurothallis espinalii Luer 1999; Pleurothallis papillisepala Schltr. 1920; Specklinia convoluta (Lindl.) Luer 2004; Stelis convoluta (Lindl.) Pridgeon & M.W.Chase 2001
References W3 Tropicos, Kew Monocot list , IPNI ;
Ann. Mag. Nat. Hist. 15: 107 Lindley 1845;
Revis. Gen. Pl. 2: 667 Kuntze 1891 as Humboltia convoluta;
Repert. Spec. Nov. Regni Veg. Beih. 7: 109 Schlechter 1920 as P papilisepala;
Orquideologia Vol 21 #2 1999 as P espinalii drawing fide;
Lindleyana Vol 16 No 4:262 Pridgeon & M.W. Chase 2001 as Stelis convoluta;
Macchu Picchu Orchids Eric Christenson 2003 as P papillisepala;
Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera and Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004 as Specklinia convoluta;
Icones Pleurothallidinarum XXIX A Century of Stelis of Ecuador Systematics of Apoda-Prorepentia Luer 2007 as Effusiella convoluta
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