Pleurothallis tricarinata [Barb. Rodr.] Poepp. & Endl. 1836 SUBGENUS Acianthera SECTION Tricarinatae Luer 1986 Photo courtesy of Dalton Holland Baptista and Orchidstudium

Inflorescence apex Photo by Gilberto Khouri and his Flickr orchid photo site

Inflorescence Photo courtesy of Eric Hunt

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Common Name The Three Keeled Pleurothallis

Found in Ecuador, Peru, Bolivia, and Brazil in wet montane forests at elevations of 80 to 1650 meters as a small sized, hot to cool growing epiphyte with erect ramicauls enveloped basally by 2 to 3 basal, loose, tubular, imbricating, acuminate sheaths all carrying a single, apical, elliptic-lanceolate, acute, dark green leaf with a compressed, petiolate base that blooms in the fall, winter and early spring on a congested, terminal, 10" [25 cm] long, racemose many flowered inflorescence subtended by a spathe.

Most sources include P platystachys as a synonym of theis species but I have separated them pending more information.

Synonyms Acianthera tricarinata (Poepp. & Endl.) Pridgeon & M.W. Chase 2001; Humboltia tricarinata (Poepp. & Endl.) Kuntze 1891; *Lepanthes tricarinata Barb. Rodr. 1882; Masdevallia tricarinata F. Lehm. & Kraenzl. 1899; Pleurothallis acutangula H.Wendl. & Kraenzl. 1900; Pleurothallis trialata Rolfe 1907; Pleurothallis triptera Schltr. 1922

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as P tripteris; Xenia Orchidaceae vol 2 Rchb.f 1865 drawing fide; Xenia Orchidaceae Vol 3 Reichenbach as P acutangula drawing; Die Orchideen Schlechter 1915 as P platystachys; Systematics of Pleurothallis Vol 3 Luer 1986; Icones Orchidacearum Peruviarum Plate 167 Bennett & Christenson 1993 drawing ok; Orchids of the High Mountain Atlantic Rainforest in SE Brazil Warren & Miller 1994 as P platystachys; Orchids of Bolivia Vasquez & Ibisch Vol 1 2000 drawing fide; Orchids of Bolivia Vasquez & Ibisch Vol 1 2000 as P triptera; Lindleyana Vol 16 No 4 2001 as Acianthera tricarinata; Icones Pleurothallidinarum Vol XXVI Luer 2004 Drawing ok;

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