Pleurothallis cardiochila L.O. Williams 1942 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859

Leaf and Flower Photos by Karl Senghas and A Mueller and The Swiss Orchid Foundation at the JanyRenz Herbaria Website

Another Flower? Photo courtesy of Dale and Deni Borders.

Flower and Leaf Photo courtesy of Patricia Harding.

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Common Name The Heart-Shaped Lip Pleurothallis

Flower Size .6" [1.5 cm]

Found in the Panamanian rainforest as well as Costa Rica as an epiphyte at elevations of 950 to 2000 meters with slender, erect ramicauls enveloped basally by 2 tubular sheaths and another below the middle and carrying a single, apical, erect, coriaceous, ovate, acute, slightly acuminate, basally sessile and deeply cordate leaf that blooms on an short, successively single flowered inflorescence arising from a reclining spathe and is held close to the leaf base.

Similar to P cardiothallis but characterized by the deeply cordate leaf, a multiveined dorsal sepal, entire, three veined petals and an obtuse, broadly ovate lip

CAUTION As there is no type flower on either the holotype or the iosptype it is impossible to be 100% sure of this specie actual identity. I have put forth 2 potential possibilities here. I feel that Senghas and Mueller’s orchids are close to Luer’s drawings but even Luer states that there is no way to be sure.

Synonyms Acronia cardiochila (L.O. Williams) Luer 2005; Zosterophyllanthos cardiochilus (L.O.Williams) Szlach. & Kulak 2006

References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Panama L.O. Williams & P Allen 1946 drawing fide; AOS Bulletin Vol 27 No 6 1958; Icones Pleurothallidinarum XXVII Systematics of Dryadella and Acronia Section Macrophyllae-Fasciculatae Luer 2005 as Acronia cardiochila drawing good to the first photo ok to the 3rd

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