Pleurothallis macrantha L.O. Williams 1941 SUBGENUS Dracontia SECTION Cylindria Luer 1986
Photo by Eric Hunt, plant grown by San Francisco Conservatory of Flowers
Photos by Alfonso Doucette Copyright © 2009, and His Flicker website
TYPE Drawing by Carl Luer
to 
Common Name The Large Flowered Pleurothallis
Flower Size 1/2" [1.25 cm]
Found in Limon province of Costa Rica and Chiriqui province of Panama at elevations of 1900 to 2600 meters in oak forests as a small sized, cool to cold growing, caespitose terrestrial or epiphyte with stout, erect, ramicauls enveloped basally by 2 to 3 loose tubular sheaths and another below the middle carrying a single, apical, erect, coriaceous, elliptical, obtuse, sessile leaf that is cuneate below into the base that blooms in the summer and fall on a lightly flexuous, distantly few flowered, 6" [15 cm] long, racemose inflorescence with a thin as long as to just shorter than the pedicel floral bract.
Distinguished by a few, large, purple mottled flowers in a loose, erect racemose inflorescence with large 3 veined, truncate petals and most important, the sides of the long midlobe of the lip involute to form a tube.
Synonyms Dracontia macrantha (L.O.Williams) Luer 2004; Stelis cylindrata Pridgeon & M.W. Chase 2002; Stelis macrantha (L.O. Williams) Pridgeon & M.W. Chase 2001
References W3 Tropicos, Kew Monocot list , IPNI ;
* Ann. Missouri Bot. Gar, 28:417 L O Williams 1941;
The Orchids of Panama L.O. Williams & P Allen 1946;
Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;
Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide;
Lindleyana Vol 16 No 4:264 Pridgeon & M.W. Chase 2001 as Stelis macrantha nom illegal;
Lindleyana Vol 17:98 #2 Pridgeon & M.W. Chase 2002 as Stelis cylindrata;
Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003;
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 2004as Dracontia macrantha;
AOS Bulletin Vol 80 #9 2011 as Dracontia macrantha photo fide;
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