Subdivision of the Genus Elaphoglossum

Mickel, John T.; Atehortua, G Lucia

doi:10.2307/1546218

Cited by 81 publications

(65 citation statements)

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“…by its simple blade rarely pedate or cristate), free veins and acrostichoid sori. Mickel & Atehortúa (1980) divided the genus in nine sections. The section Undulata Christ was defined by short creeping to erect rhizome; absence of phyllopodia; ovate-lanceolate blade; subulate to deltate-lanceolate, erose or toothed blade scales; conspicuous hydathodes; spores without ridges, openly reticulate-equinate, the spine bases diverging and forming a reticulum occasionally with irregular verrucae or perforated crests.…”

Section: Introductionmentioning

confidence: 99%

A nex species of Elaphoglossum Schott ex J. Sm. (Dryopteridaceae) from Costa Rica.

Rojas-Alvarado

Cambronero²

2018

abm

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Una especie nueva de Elaphoglossum Schott ex J. Sm de la sección Undulata Christ es descrita aquí: Elaphoglossum pallidosquamum A. Rojas & P. Muñoz. La nueva especie es similar a E. herpestes por su rizoma largo ascendente, pero difiere por escamas del rizoma no cordadas basalmente (vs. cordadas) y más pálidas pardo-amarillentas con margen blanquecino o completamente blanquecinas (vs. castañas), escamas del estípite adpresas (vs. adpresas a moderadamente patentes) y más densas, lámina más angosta 2.5-4 cm de ancho (vs. 5-6.5 cm) con base anchamente cuneada a obtusa (vs. redonda), lámina con diferentes tipos de escamas las costales imbricadas (vs. distantes entre sí), escamas adaxiales densas (vs. dispersas), escamas abaxiales enrrolladas y moderadamente densas (vs. escamas abaxiales planas y dispersas) y, escamas marginales muy densas (vs. moderadamente densas a dispersas) y estas más pálidas blanquecinas a amarillo pálido (vs. pardas).Palabras clave: Eupolipodios, helechos, Polypodiales, Pteridophyta, sección Undulata. AbstractA new species of Elaphoglossum Schott ex J. Sm of section Undulata Christ is described here: Elaphoglossum pallidosquamum A. Rojas & P. Muñoz. The new species is similar to E. herpestes because of its long ascending rhizome, but differs by its not chordate (vs. chordate) basally and paler rhizome scales brown-yellowish with whitish margin or fully whitish (vs. castaneous), appressed (vs. appressed to moderately patent) and more dense stipe scales, narrower blade 2.5-4 cm broad (vs. 5-6.5 cm) with broadly cuneate to obtuse base (vs. rounded), blade with different scale types costa with imbricate scales, dense and flat adaxial scales, moderately dense and enrolled abaxial scales and very dense marginal scales (vs. all scales similar except for denser in midvein) and they are paler whitish to pale yellow (vs. brown).

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Section: Introductionmentioning

confidence: 99%

A nex species of Elaphoglossum Schott ex J. Sm. (Dryopteridaceae) from Costa Rica.

Rojas-Alvarado

Cambronero²

2018

abm

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“…is one of the largest and most complex of ferns genera, with perhaps 600 species and distributed throughout the tropics (Mickel & Atehortúa, 1980).…”

Section: Introductionmentioning

confidence: 99%

“…The genus is remarkably uniform with mostly simple-bladed ferns with acrostichoid sori and free veins (with two exceptions) (Mickel & Atehortúa, 1980). The section Elaphoglossum is the larger group of the genus with approximately 75% of the species, and is characterized by absent hydathodes, present phyllopodia, medium size blades and stellate blade scales; the subsection Pachyglossa Christ is characterized by subcoriaceous to coriaceous blades and minute and stellate blade scales (vs. chartaceous blades and absent scales in subsection Tenuifolia Mickel & L. Atehortúa) (Rojas 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Only subsection Pachyglossa was recognized by Mickel and Atehortúa (1980), but Skog et al (2004) pointed out that molecular analyses supported the distinction between two clades: Platyglossa Christ and Pachyglossa. Both names were first published by Christ (1899), but their morphological definitions must be modified regarding changes of species belonging to each subsection (Rouhan et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Three new species of Elaphoglossum Sm. (Dryopteridaceae) from the pacific of Costa Rica.

Rojas-Alvarado¹,

Baaijen-Harteveld²

2018

abm

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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.

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“…Polytrichia H. Christ described from Brazil. The members of this section can be recognized morphologically by the presence of subulate scales and absence of hydathodes on the leaves of adult sporophytes (Mickel & Atehortúa 1980;Matos & Moran 2013).…”

Section: Introductionmentioning

confidence: 99%

Typification of some species names in Elaphoglossum section Polytrichia (Dryopteridaceae) from Brazil

Matos

2014

Acta Bot. Bras.

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Subdivision of the Genus Elaphoglossum

Cited by 81 publications

References 3 publications

A nex species of Elaphoglossum Schott ex J. Sm. (Dryopteridaceae) from Costa Rica.

A nex species of Elaphoglossum Schott ex J. Sm. (Dryopteridaceae) from Costa Rica.

Three new species of Elaphoglossum Sm. (Dryopteridaceae) from the pacific of Costa Rica.

Typification of some species names in Elaphoglossum section Polytrichia (Dryopteridaceae) from Brazil

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