Pleurothallis allenii L.O. Williams 1940 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Acroniae SERIES Amphygiae Luer 1998

Photo by © Jay Pfahl

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Drawing

Drawing by © Carl Luer

Common Name Allen's Pleurothallis [American Botanist and collector of species mid 20th cen]

Flower Size 2/5" [1 cm]

Found in Cocle' province of central Panama at elevations of 550 to 1000 meters as a miniature sized, warm growing epiphyte with slender, erect ramicauls enveloped basally by 2 to 3 close, tubular sheaths and another below the middle carrying a single, apical, erect, coriaceous, narrowly elliptical, acute, sessile leaf that is narrowly cuneate basally into the base that blooms in the spring, summer and fall on an erect, arising from a spathe that holds the flowers at mid leaf, short, single flowered inflorescence with a shorter than the ovary floral bract.

"Characterized by the small habit, narrow leaves and a single, proportionally large, gaping, purple flower with the floral parts edged in yellow. The dorsal sepal and synsepal are similar, spreading in opposite directions exposing the large, forwardly directed, minutely erose petals. The lip is red, triangular, acute and spiculate at the apex, with rounded basal lobes and a curved, pubescent callus in the center of the disc." Luer 1998

Synonyms Acronia allenii (L.O.Williams) Luer 2005; Zosterophyllanthos allenii ( L.O.Williams ) Szlach. & Marg. 2002

References W3 Tropicos, Kew Monocot list , IPNI ;

* Ann. Missouri Bot. Gard. 27(3): 275 L O Williams 1940.;

The Orchids of Panama L.O. Williams & P Allen 1946 drawing fide;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

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;

Icones Pleurothallidinarum Vol XXVII Systematics of Dryadella and Acronia Section Macrophyllae-Fasciculatae Luer 2005 as Acronia allenii;

Mille et Une Mini Orchideees Roguenant 2009 photo fide;

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