Pleurothallis oncoglossa Luer 1996 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859 Photo by Daniel Jimenez and his Flickr Orchid Photo Website

Common Name The Hook-Shaped Tongue Pleurothallis

Flower Size 5/8" [1.5 cm]

Found in Costa Rica in shady moist cloud forest at elevations of 1100 to 1900 meters as a large sized, warm growing epiphyte with erect, stout ramicauls enveloped basally by 2 close, tubular sheaths and another on the lower half and carrying a single, apical, suberect to spreading, coriaceous, avate, acute, acuminate, basally sessile and deeply cordate leaf that blooms in the winter on a fascile of successive single flowered inflorescence arising through a narrow spathe and holding the flower against the leaf base.

Similar to P cardiothallis but differs in the large thick, acutely triangular lip with a narrow hook-like apex.

Synonyms Acronia oncoglossa [Luer]Luer 2005; Zosterophyllanthos oncoglossus (Luer) Szlach. & Kulak 2006

References W3 Tropicos, Kew Monocot list , IPNI ; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Icones Pleurothallidinarum XXVII Systematics of Dryadella and Acronia Section Macrophyllae-Fasciculatae Luer 2005 drawing fide as Acronia oncoglossa; Orchids of Costa Rica Vol 5 Morales 2009 photo fide; 17(2): Pupulin 2017 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/drawing fide;