Pleurothallis rubens Lindl. 1836 SUBGENUS Specklinia SECTION Acuminatae Luer 1986
Photos by © Rebecca Repasky and The Atrium Website
Photo by © Gustavo Righelato
Brazilian Plant and Inflorescence Photos by © Dalton Holland Baptiste
Brazilian Plant and flowers in Situ Minas Gerais Brazil Photo by © Ismael Nilton Vischi
to 
Common Name The Becoming Red Pleurothallis [refers to the dried flowers]
Flower Size 1/2" [1.25 cm]
Found in Ecuador, Peru, Bolivia and Brazil in wet montane forests at elevations of 600 to 2750 meters as a miniature sized, warm to cold growing, caespitose epiphyte with erect ramicauls enveloped by 1 to 3 large, complanate, scarious sheaths and carrying a single, apical, oblong-elliptic, subacute, blunt, coriaceous leaf that blooms in the fall on an erect to arching, 4.4" [11 cm] long, simultaneously opening, several flowered, racemose inflorescence with several close, tubular bracts and ovate, acute, sub-infundibuliform floral bracts that cover 1/2 of the ovary.
Separated from other species by the labellum with subapical, transverse ridges of blunt teeth and a very elongate, beaked clinadrial hood.
CAUTION It seems that this orchid is variable in form of sepals, petals and lip. Here are represented both Peruvian and Brazilian specimens. I only have references on the Peruvian Orchid, they are absolutely correct to Bennett & Christenson 1998.
Synonyms Anathallis amblyopetala (Schltr.) Pridgeon & M.W. Chase 2001; Anathallis rubens (Lindl.) Pridgeon & M.W. Chase 2001; Humboldtia rubens (Lindl.) Kuntze 1891; Humboltia rubens (Lindl.) Kuntze 1891; Pleurothallis amblyopetala Schltr. 1913; Pleurothallis excisa C. Schweinf. 1953; Pleurothallis montserratii Porsch 1905; Pleurothallis rubens var. latifolia Cogn. 1896; Pleurothallis rubens var. longifolia Cogn. 1896; Specklinia rubens (Lindl.) F.Barros 1983 publ. 1984;
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915; Encyclopedia of Cultivated Orchids Hawkes 1965; Orchidaceae Brasilensis Band 1 Pabst & Dungs 1975 drawing ok; Systematics of Pleurothallis Vol 3 Luer 1986 as Pleurothallis amblyopetala; Orchids of the High Mountain Atlantic Rainforest in SE Brazil Warren & Miller 1994 drawing/photo fide ; Icones Orchidacearum Peruviarum Plate 552 Bennett & Christenson 1998 drawing fide to the first 2 photos; Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-Racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999 drawing fide; Orchids of Bolivia Vasquez & Ibisch Vol 1 2000 drawing ok; Lindleyana Vol 16 No 4 2001 as Anathallis rubens; Macchu Picchu Orchids Eric Christenson 2003; Icones Pleurothallidinarum Vol XXVI Luer 2004 as Specklinia rubens; Orquideas Da Chapada Diamantina Brito & Cribb 2005 drawing good; Orchid Digest Vol 71 No 3 2007 photo fide; The Organ Mountain Range Its History and Its Orchids Miller, Warren, Miller and Seehawer 2008 drawing ok; Orchid Species of Peru Zelenko Bermudez 2009 as Anathalis rubens photo fide to the second photo
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