Pleurothallis macrantha L.O. Williams 1941 SUBGENUS Dracontia SECTION Cylindria Luer 1986

Photo by Eric Hunt, plant grown by San Francisco Conservatory of Flowers

Head-on View

Side View

Photos by Alfonso Doucette Copyright 2009, and His Flicker website

TYPE Drawing

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;

Icones Pleurothallidinarum Vol XVII Systematics of Pleurothallis Section Abortivae, Truncatae, Subsection Acroniae, Subgenera Dracontia and Uncifera Luer 1998

Icones Pleurothallidinarum Vol XVII Systematics of Pleurothallis Section Abortivae, Truncatae, Subsection Acroniae, Subgenera Dracontia and Uncifera Luer 1998 drawing 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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