Pleurothallis coriacardia Rchb. f. 1854 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859
Photo by Jay Pfahl
Another Clone or another species
Photos courtesy of Patricia Harding
Another Flower not round apex to lip?
Photo by Jay Pfahl
Drawing by Carl Luer
and 
Common Name The Leathery Heart-Shaped Leaf Pleurothallis
Flower Size .4" [1 cm]
Found in Colombia, Ecuador and Peru in cloud forests at elevations of 1200 to 3800 meters as a medium to large sized, cool to cold growing, caespitose epiphyte with slender to stout, erect ramicauls enveloped basally by 2 close tubular sheaths and another on the lower third and carrying a single, apical, suberect to spreading, coriaceous, ovate to narrowly ovate, acute, lightly acuminate, basally sessile and deeply cordate leaf that blooms in the spring and summer on sometimes several, arising from the apex of the ramicaul through a spathe, fascile of short, successive, singler flowered infloresence with a tubular, shorter than the pedicel floral bract.
"Vegetatively like many others, but the flowers, however, are sufficiently constant in morphology to permit easy recognition. One to several, large, brownish [sometimes "polished" or striped], bilabiate, resupinate flowers are producesd simultaneously atop the leaf. The dorsal sepal and synsepal are ovate and acute. The dorsal is three veined, the synsepal is convex with slightly recurved sides with the lip exposed. The petals are narrowly triangular, acute, usually minutely denticulate, shorter than the lip and commonly pointed laterally and downward from the junction of the sepals. The lip is lingulate and obtuse, at least twice as long as broad. The surface is slightly convex and variably glabrous to minutely or microscopically verrucose with denticulate margins. A small glenion is present above the deflexed base." Luer 2005
Synonyms Acronia coriacardia (Rchb. f.) Luer 2005; Humboldtia coriacardia (Rchb.f.) Kuntze 1891; Pleurothallis corralensis Garay 1954; Pleurothallis leontoglossa Schltr. 1920; Pleurothallis smithii Schltr. 1920; Zosterophyllanthos coriacardia (Rchb.f.) Szlach. & Kulak 2006
References W3 Tropicos, Kew Monocot list , IPNI ;
* Bonplandia (Hannover) 2: 26 Rchb.f 1854;
Repertorium Specierum Novarum Regni Vegetabilis 1920 as P leontoglosssa;
Repertorium Specierum Novarum Regni Vegetabilis 1920 as P smithii;
Orchids of Venezuela An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P undulata drawing good;
Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing fide;
Native Ecuadorian Orchids Vol 4 Dodson 2003 1st photo fide others less so;
Orquideas Nativas del Tachira Cesar Fernandez 2003 photo ok;
Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003;
Macchu Picchu Orchids Eric Christenson 2003;
Icones Pleurothallidinarum Vol XXVII Systematics of Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia cordicardia
Icones Pleurothallidinarum Vol XXVII Systematics of Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia cordicardia drawing fide;
Orchid Species of Peru Zelenko & Bermudez 2009 photo good;
Orquideas del Valle de Aburra Medellin Colombia Orqidelogia 2014 photo hmm;
Orquideas de Farallones de Cali Galindo-Tarazona, Haelterman, Zuluaga Trochez and Sebastian Moreno 2020 photo fide
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