Pleurothallis palliolata Ames 1922 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859
Photos by Ralf Käppel.
Plant and Flowers in situ Costa Rica
Photo by © Wilfried Löderbusch
to 
Common Name The Pale Sided Pleurothallis ?
Flower Size .6" [1.5 cm]
Found in Costa Rica and Panama as a small sized, warm to cool growing epiphyte at elevations of 1200 to 2100 meters with slender, suberect to horizontal ramicauls enveloped basally by 2 close, tubular sheaths and another on the lower half and carrying a single, apical suberect to horizontal, coriaceous, avate, acute, basally sessile and deeply cordate leaf that can bloom at any time of the year on a fascile of successive single [sometimes two] flowered inflorescence arising through a narrow spathe.
Easily distinguished by the large, not widely expanded flower with a deeply concave dorsal sepal and a synsepal concave below the middle to accomodate the comparitively large transversely ovate, concave lip with 2 pairs of calli which is surrounded by the falcate, fringed petals.
Synonyms Acronia palliolata (Ames) Luer 2005; Zosterophyllanthos palliolatus (Ames) Szlach. & Kulak 2006
References W3 Tropicos, Kew Monocot list , IPNI ; The Epidendra Website; AOS Bulletin Vol 62 No 1 1993 photo fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003 drawing fide; Australian Orchid Review Vol 69 No 4 2004 photo; Icones Pleurothallidinarum XXVII Systematics of Dryadella and Acronia Section Macrophyllae-Fasciculatae Luer 2005 drawing fide as Acronia palliolata; AOS Bulletin Vol 75 No 2 2006 photo fide; AOS Bulletin Vol 76 No 9 2007 photo fideas Acronia palliolata; Orchid Digest Vol 72 No 4 2008 photo fide; LANKESTERIANA 13(3) 2014 photo fide; LANKESTERIANA 17(2): Pupulin 2017; Lankesteriana 19(1). 31 - 55 2019 photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide; Harvard Papers in Botany Vol. 26, No. 1 2021, The Researchgate Website photo fide;
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