Coryanthes Hooker 1831

Key to the species with pubescent lips in the subgenus Coryanthes 1. Plants rather small, pseudobulbs up to 5–6 cm high..........................................................................................................................2 - Plants bigger, pseudobulbs over 8–10 cm and up to 17 cm high.......................................................................................................3 2. Inflorescence ca. 10 cm long; flowers 2, white................................................................................................. Coryanthes vasquezii - Inflorescence up to 30 cm long; flower 1, yellow with red spots........................................................................... Coryanthes lanata 3. Visible part of mesochile over 1.5 times higher than hypochile........................................................................................................4 - Visible part of mesochile as high as or less high than hypochile.......................................................................................................6 4. Hypochile 2 times wider than deep, with a short pubescence covering almost all the abaxial face.................. Coryanthes tefeensis - Hypochile about as wide as deep, with a more limited pubescent area.............................................................................................5 5. Flower ca. 7 cm high, mesochile adorned with warts, hypochile with a semicircular pubescence on the superior portion........................................................................................................................................................................................ Coryanthes maduroana - Flower ca. 9 cm high, mesochile without any wart, hypochile pubescent only on a median abaxial strip........ Coryanthes bergoldii 6. Apex of the hypochile long acuminate........................................................................................................... Coryanthes cavalcantei - Apex of the hypochile rather truncate................................................................................................................................................7 7. Flowers cream, pubescence of the hypochile restricted to the longitudinal clefts, mesochile pubescent on an abaxial median longitudinal strip............................................................................................................................................... Coryanthes miuaensis - Flowers yellow, pubescence of the hypochile covering a broad median band, mesochile glabrous............. Coryanthes charlesianaPublished as part of Chiron, Guy R. & Marçal, Sidney, 2022, Coryanthes charlesiana (Stanhopeinae, Cymbidieae, Orchidaceae), a new species from Brazil, pp. 173-178 in Phytotaxa 575 (2) on page 177, DOI: 10.11646/phytotaxa.575.2.7, http://zenodo.org/record/741326