In this paper three new species of Elaphoglossum Schott ex J. Sm., are described and illustrated, located on the pacific slope of Cordillera de Talamanca and Cerro Caraigres (Cerro Dragón), Costa Rica. The new species are: E. dragonense A. Rojas, E. flavosquamum A. Rojas and E. pacificum A. Rojas, all belong to the section Elaphoglossum subsection Pachyglossa Christ. The first species resembles E. gloeorrhizum Mickel but is separated by showing a scaly rhizome, phyllopodia with two sections, the basal one resinous as the rhizome and the second non-resinous, bigger stipe scales, and the abaxial blade is scaly. The second entity resembles E. delgadilloanum A. Rojas, but differs by having blonde to orange-yellowish rhizome scales with long lateral processes and the blade scales are mainly smaller, less dense and bicolorous with black central body and brown rays. The latter species is similar to E. cismense Rosenst., but is identified by its more slender rhizome, fronds at less distance between them, shorter phyllopodia, narrowly elliptic blade, bigger abaxial blade scales and a linear-elliptical and narrower fertile blade.Key words: Caraigres; Elaphoglossum dragonense; Elaphoglossum flavosquamum; Elaphoglossum pacificum; endemic; neotropics; subsection Pachyglossa. Resumen Tres especies nuevas de Elaphoglossum Schott ex J. Sm. (Dryopteridaceae) para el pacífico de Costa RicaEn este artículo se describen e ilustran tres especies nuevas de Elaphoglossum Schott ex J. Sm., localizadas en la vertiente pacífica de la Cordillera de Talamanca y Cerro Caraigres (Cerro Dragón), Costa Rica. Las especies nuevas son: E. dragonense A. Rojas, E. flavosquamum A. Rojas y E. pacificum A. Rojas, todas de la sección Elaphoglossum subsección Pachyglossa Christ. La primera especie se parece a E. gloeorrhizum Mickel, pero se separa por mostrar escamas en el rizoma, filopodio con dos secciones, la basal resinosa como el rizoma y la segunda no resinosa, escamas del estípite más grandes y el envés de la lámina con escamas estrelladas. La segunda entidad se asemeja a E. delgadilloanum A. Rojas, pero difiere por presentar escamas del rizoma rubias a anaranjado-amarillentas y con largos procesos laterales y escamas de la lámina la mayoría más pequeñas, menos densas y bicoloras con el centro negro y los rayos pardos. La última especie es similar a E. cismense Rosenst., pero se identifica por su rizoma más delgado, largo-reptante, frondas más distantes, con filopodios más cortos, lámina angostamente elíptica, escamas del envés más largas, lámina fértil más corta y linear-elíptica.
In this paper three new species of Elaphoglossum Schott ex J. Sm., are described and illustrated, located on the pacific slope of Cordillera de Talamanca and Cerro Caraigres (Cerro Dragón), Costa Rica. The new species are: E. dragonense A. Rojas, E. flavosquamum A. Rojas and E. pacificum A. Rojas, all belong to the section Elaphoglossum subsection Pachyglossa Christ. The first species resembles E. gloeorrhizum Mickel but is separated by showing a scaly rhizome, phyllopodia with two sections, the basal one resinous as the rhizome and the second non-resinous, bigger stipe scales, and the abaxial blade is scaly. The second entity resembles E. delgadilloanum A. Rojas, but differs by having blonde to orange-yellowish rhizome scales with long lateral processes and the blade scales are mainly smaller, less dense and bicolorous with black central body and brown rays. The latter species is similar to E. cismense Rosenst., but is identified by its more slender rhizome, fronds at less distance between them, shorter phyllopodia, narrowly elliptic blade, bigger abaxial blade scales and a linear-elliptical and narrower fertile blade.
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