Three new species of Marcgraviaceae from Costa Rica, with references to related species and notes on the generic placement of Schwartzia jimenezii

Marcgravia glandulosomarginata, Ruyschia moralesii and Schwartzia tarrazuensis, woody epi- phytes known mostly from mid-elevation rainforest of Costa Rica’s pacific coastal mountains just south of San José, are described, compared to related species and illustrated. The new Marcgravia species is known also from Panama and Colombia, but the other two species are endemic to Costa Rica. Se describen, ilustran y comparan con especies afines Marcgravia glanduloso-marginata, Ruy- schia moralesii y Schwartzia tarrazuensis, epífitas leñosas principalmente de bosques lluviosos de alturas medias en la cordillera costeña pacífica de Costa Rica, al sur de San José. La nueva especie de Marcgravia se conoce también de Panamá y Colombia; las otras dos especies son endémicas en Costa Rica.