Pleurothallis casapensis Lindl. 1842 SUBGENUS Acianthera SECTION Sicariae SUBSECTION Sicariae Luer 1986

Photo courtesy of Weyman Bussey, plant grown by Jim Hamilton of Petite Plaisance Orchids

Flower and Leaf

Plant and Flowers Photo courtesy of Eric Hunt, plant grown by Anna Chai

Green Flower Photo by Jay Pfahl

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Common Name

Flower Size 3/8" [1 cm]

Found in Colombia, Ecuador, Peru, Bolivia and Venezuela as a miniature sized, warm to cold growing epiphyte in wet montane forests and secondary evergreen forests at elevations of 600 to 2800 meters with erect, stout ramicauls enveloped basally by 2 tubular sheaths and carrying a single, apical, ovate, ancipitous leaf that gradually narrows into the long petiole and blooms in the spring and winter on a short, racemose, several flowered inflorescence holding the flowers close to the leaf base.

Many references include this species as a synonym of P pubescens but I have left them separate for now.

Synonyms Acianthera casapensis (Lindl.) Pridgeon & M.W.Chase 2001; Acianthera chamensis (Lindl.) Pridgeon & M.W.Chase 2001; Acianthera coffeicola (Schltr.) Pridgeon & M.W.Chase 2001; Acianthera harpophylla (Rchb.f.) Luer 2004; Acianthera mexiae (Luer) Pridgeon & M.W.Chase 2001; Acianthera phyllostachys (Schltr.) Pridgeon & M.W.Chase 2001; Humboldtia casapensis (Lindl.) Kuntze 1891; Humboldtia chamensis (Lindl.) Kuntze 1891; Humboldtia harpophylla (Rchb.f.) Kuntze 1891; Humboltia casapensis (Lindl.) Kuntze 1891; Humboltia chamensis (Lindl.) Kuntze 1891; Pleurothallis chamensis Lindl. 1846; Pleurothallis chamensis var. tenuis C. Schweinf. 1942; Pleurothallis coffeicola Schltr. 1929; Pleurothallis harpophylla Rchb.f. 1855; Pleurothallis mexiae Luer 1999; Pleurothallis phyllostachys Schltr. 1921; Pleurothallis triangularis Klotzsch & H. Karst. 1847; Pleurothallis triquetra Klotzsch ex Lindl. 1859

References W3 Tropicos Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as P triangularis; Bonplandia Rchb.f 1855 as P harpophylla; Bonplandia Rchb.f 1855 as P chamensis; Xenia Orchidaceae Vol 3 Reichenbach 1878 as P chamensis; Otia Botanica Hamburgensia Rchb.f 1881 as P harpophylla var atropurpurea; Die Orchideen der Sudamerikanischen Kordillerenstaaten IV Peru Schlechter 1921 as P phylostachys; The Orchids of Panama L.O. Williams & P Allen 1946; Venezuelan Orchids Illustrated Vol 1 Dunsterville & Garay 1959 as P chamensis drawing good; Venezuelan Orchids Vol 5 Dunsterville & Garay 1966 as P coffeicola drawing ok; AOS Bulletin Vol 38 Nom 6 1969 as P chamensis; Flora de Venezuela Foldats Volumen XV Part 2 1970 as P chamesis drawing good; Flora de Venezuela Foldats Volumen XV Part 2 1970 as P coffeicola; Orchidaceae Brasilensis Band 1 Pabst & Dungs 1975 as P coffeicola drawing ok; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P chamensis drawing good; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P coffeicola drawing ok; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as Pleurothallis chamensis; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as Pleurothallis coffeicola; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as P phyllostachys; Icones Planetarum Tropicarum Series II Orchids of Peru Plate 0154 Dodson & Bennett 1989 drawing fide; Native Colombian Orchids Vol 3 COS 1991 as P chamensis photo fide; Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999 as P mexiae; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 as P chamensis drawing good; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 as P discophylla drawing ok; Orchids of Bolivia Vol 1 Pleurothallidinae Vasquez & Ibisch 2000 photo/drawing fide; Lindleyana Vol 16 No 4 2001 as Acianthera casapensis; Lindleyana Vol 16 No 4 2001 as Acianthera chamensis; Lindleyana Vol 16 No 4 2001 as Acianthera coffeicola; Orquideas Nativas del Tachira Cesar Fernandez 2003 as P chamensis photo ok; Icones Pleurothallidinarum Vol XXVI Luer 2004 drawing fide; Orchid Species of Peru Zelenko Bermudez 2009 photo fide as Acianthera casapensis; Mille et Une Mini Orchideees Roguenant 2009 as Acianthera casapensis photo ok; Orquideas del Valle de Aburra Medellin Colombia Orqidelogia 2014 photo fide

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