Pleurothallis bivalvis Lindl. 1846 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859 Photo courtesy of Patricia Harding.

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Common Name The Two Folded Pleurothallis

Flower Size 1/2" [1.25 cm]

Found in Peru, Ecuador, Colombia and Venezuela in wet montane cloud forests on steep slopes at elevations of 1000 to 3300 meters as a small sized, cool to cold growing epiphyte and terrestrial with an erect, stout ramicaul subtended by 2 tubular sheaths and carrying a single, cordate-elliptical leaf that blooms in the winter and spring on a sessile, fasciculate, successively single, few flowered inflorescence holding the flowers close to the leaf base.

Synonyms Acronia bivalvis (Lindl.) Luer 2005; Humboldtia bivalvis (Lindl.) Kuntze 1891 Humboltia bivalvis (Lindl.) Kuntze 1891; Humboldtia cardium (Rchb.f.) Kuntze 1891; Pleurothallis angusta Ames & C.Schweinf. 1925; Pleurothallis antonensis L.O.Williams 1942; Pleurothallis archidiaconi Ames 1925; Pleurothallis cardiantha Rchb.f. 1876; Pleurothallis cardium Rchb.f. 1854; Pleurothallis chanchamayoensis Schltr. 1921; Pleurothallis fuscata Braid, 1924; Pleurothallis harlingii Garay 1953; Pleurothallis ignivomi Schltr. 1921; Pleurothallis lansbergiana Regel 1856; Pleurothallis lansbergii Regel 1856; Pleurothallis lilianiae Luer 2003; Pleurothallis macrocardia Rchb. f. 1855; Pleurothallis phaeantha Schltr. 1924; Pleurothallis pichinchae Schltr. 1915; Pleurothallis sigsigensis Schltr. 1921; Pleurothallis stenocardium Schltr.1914; Zosterophyllanthos bivalvis (Lindl.) Szlach. 2011; Zosterophyllanthos ignivomi (Schltr.) Szlach. & Marg. 2001; Zosterophyllanthos lilianiae (Luer) Szlach. & Kulak 2006

References W3 Tropicos Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as P cardium; Xenia Orchidaceae Vol 3 Reichenbach 1892 as P lansbergii drawing fide; Xenia Orchidaceae Vol 3 Reichenbach 1896 as P cardium drawing fide; Die Orchideen Schlechter 1915 as P cardium; Die Orchideen der Sudamerikanischen Kordillerenstaaten IV Peru Schlechter 1921 as P chanchamayoensis; Die Orchideen der Sudamerikanischen Kordillerenstaaten III Ecuador Schlechter 1921 as P sigsigensis; Beitrage Zur Orchideenkunde Von Colombia 27:52 Schlechter 1924 as P phaeantha; Beitrage Zur Orchideenkunde Von Colombia 27:131 Schlechter 1924 as P pulvinipes; The Orchids of Panama L.O. Williams & P Allen 1946 as P antonensis; Venezuelan Orchids Illustrated Vol 1 Dunsterville & Garay 1959 drawing fide as P monocardia drawing good; Native Orchids of Trinidad Schultes 1960 as Pleurothallis archidiaconi; Venezuelan Orchids Illustrated Vol 2 Dunsterville & Garay 1961 as P linguifera not drawing fide; Encyclopedia of Cultivated Orchids Hawkes 1965 as P cardium; Venezuelan Orchids Illustrated Vol 4 Dunsterville & Garay 1966 as P archidiaconi not = P phyllocardioides; Venezuelan Orchids Illustrated Vol 4 Dunsterville & Garay 1966 drawing fide; Flora de Venezuela Foldats Volumen XV Part 2 1970 drawing ok; Flora de Venezuela Foldats Volumen XV Part 2 1970 as P archidiaconi drawing good; Flora de Venezuela Foldats Volumen XV Part 2 1970 drawing ok; Flora de Venezuela Foldats Volumen XV Part 2 1970 as Pleurothallis cardiantha drawing good; Flora de Venezuela Foldats Volumen XV Part 2 1970 as Pleurothallis cardium drawing ok; Flora de Venezuela Foldats Volumen XV Part 2 1970 as Pleurothallis stenocardium drawing good; Die Orchideen #7 25-28 tafel 8 Rudolph Schlechter 1971 photo hmm; Die Orchideen #7 25-28 tafel 8 Rudolph Schlechter 1971 as P ignivomii drawing hmm; Venezuelan Orchids Illustrated Vol 6 Dunsterville & Garay 1976 as P lansbergii; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P archidiaconi not = P phyllocardioides; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P cardiantha not = P undulata; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P lansbergii drawing fide; Icones Planetarum Tropicarum plate 235 Dodson 1980 as Pleurothallis ignivomi drawing fide; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as P iognivomi; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as P pulvinipes; Native Orchids of the Eastern Carribean Kenny 1988 as P archidiaconi photo fide; Icones Orchidacearum I Plate 87 Hagsater & Salazar 1990 as P antonensis drawing ok; Venezuela; Paraiso de Orquideas Romero 1997 as P cardiantha photo good; Native Colombian Orchids Vol 6 COS 1998 photo ok; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawings fide; Orchids of Bolivia Vol 1 Pleurothallidinae Vasquez & Ibisch 2000 as P ignivomi drawing fide; Native Ecuadorian Orchids Vol 4 Dodson 2003 drawing fide; Orquideas Nativas del Tachira Cesar Fernandez 2003 photo not; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003 as P stenocardium; Icones Pleurothallidinarum XXVII Systematics of Dryadella and Acronia Section Macrophyllae-Fasciculatae Luer 2005 as Acronia bivalvis; Orchids of Mexico Hagsater, Soto, Salazar, Jimenez Lopez & Dressler 2005 as P antonensis; Orchid Species of Peru Zelenko & Bermudez 2009 photo fide; Orchids of Costa Rica Vol 5 Morales 2009 as P angusta photo fide; Orchids of Costa Rica Vol 5 Morales 2009 as P cardiantha photo fide; Mille et Une Mini Orchideees Roguenant 2009 photo good; An Illustrated Field Guide to the Orchids of the Yotoco Forest Reserve Colombia Kolanowska, Escobar, Sanchez & Szlachetko 2011 as Zosterophyllanthes bivalvis drawing hmm; Orquideas del Valle de Aburra Medellin Colombia Orqidelogia 2014 photo fide; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 as P antonensis photo good

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