Pleurothallis radula Luer 1979 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859

Photo by © Franco Pupulin

Another Flower

Photo by © Daniel Jimenez and his Costa Rican Orchid Photo Flickr site

Full shadeCool Winter

Common Name or Meaning The Raspy Pleurothallis [refers to the verrucose lip]

Flower Size .2" [4 mm]

Found in Costa Rica in forests at elevations around 1500 to 1900 meters as a small sized, cool growing terrestrial with slender, erect ramicauls enveloped by a close tubular sheth below the middle and 2 to 3 others at the base and carrying a single, apical, suberect to horizontal, coriaceous, narrowly ovate, acute deeply cordate and sessile base leaf that blooms in the winter on a fascile of successively erect, resupinate, single flowered inflorescence arising through an erect spathe with the peduncle concealed within and thin tubular floral bracts.

The species is characterized by the horizontal, narrowly cordate leaf with an erect, conspicuous spathe giving rise to single yellow flowers with acute and similar dorsal sepal and synsepal, the petals are serrate and reflexed and the lip is coarsly verrucose.

Synonyms Acronia radula (Luer) Luer 2005; Zosterophyllanthos radula (Luer) Szlach. & Marg. 2001;

References W3 Tropicos, Kew Monocot list , IPNI ; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Icones Pleurothallidinarum Vol XXVII Luer 2005 as Acronia radula drawing fide; Orchids of Costa Rica Vol 5 Morales 2009 photo fide; LANKESTERIANA 17(2) Pupulin, J.Aguilar & M.Díaz 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;