Pleurothallis aphthosa Lindl.1838 SUBGENUS Acianthera SECTION Brachystachyae Lindley 1859

Another Flower Photo courtesy of Dalton Holland Baptista

Plant and Flower Photo courtesy of Mauro Rosim of Brazil.

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Flower Size 1/8" [5 mm]

A small sized, hot to warm growing, epiphytic species from Colombia, Ecuador, Peru, Bolivia, Brazil and Paraguay and found in wet montane forests and evergreen forests at altitudes of 250 to 1450 meters with a channeled ramicaul with 2, basal, tubular sheaths and carrying a single, apical, oblanceolate, shortly decurrent, obtusely bilobed or retuse, thickly coriaceous, gradually narrowing below into the channeled petiolate base leaf that blooms on an apical, short, few to many flowered, fasciculate inflorescence enveloped by 2 to 4, basal tubular bracts that is held at the leaf base and has a foul odor all occuring in the winter and spring.

CAUTION The photo above is also used in this treatment for the species P hoffmannseggiana with which Pabst agrees, making this species different only with the lateral sepals united into a synsepal which is represented by the second photo. They may be synpmonous and if so then this one takes precendence. I await better information!

Synonyms Acianthera aphthosa (Lindl.) Pridgeon & M.W.Chase 2001; Pleurothallis macrophyta Barb. Rodr. 1877; Pleurothallis pelioxantha Barb. Rodr. 1877; Pleurothallis pleioxantha Barb. Rodr. 1877; Specklinia aphtosa (Lindl.) F. Barros 1984

References W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 26 No 10 1957; Orchidaceae Brasilensis Band 1 Pabst & Dungs 1975 drawing hmm; Systematics of Pleurothallis Vol III Luer 1986; Icones Planetarum Tropicarum plate 212 Dodson 1980 drawing fide to first photo; Icones Planetarum Tropicarum Series II plate 0276 Dodson & Vasquez 1989 drawing hmm synsepal united see caution note; Icones Orchidacearum Peruviarum Plate 156 Bennett & Christenson 1993 drawing fide to first photo; Orchids of Bolivia Vol 1 Pleurothallidinae Vasquez & Ibisch 2000 drawing fide/photo ok; Lindleyana Vol 16 No 4 2001 as Acianthera apthosa; Macchu Picchu Orchids Eric Christenson 2003; Icones Pleurothallidinarum Vol XXVI Luer 2004 drawing fide; 100 Orquideas Argentinas Freuler 2005 photo fide; The Organ Mountain Range Its History and Its Orchids Miller, Warren, Miller and Seehawer 2008 drawing good; Orchid Species of Peru Zelenko Bermudez 2009 photo fide as Acianthera apthosa

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