Spore Morphology in Relation to Phylogeny in the Fern Genus <i>Elaphoglossum</i> (Dryopteridaceae)

Moran, Robbin C.; Hanks, Judith Garrison; Rouhan, Germinal

doi:10.1086/518269

Cited by 56 publications

(58 citation statements)

References 8 publications

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“…In this sense, perispore ultrastructure and ornamentation are useful to characterize genus or subgeneric groups within the same family, a conclusion made also by Tryon (1986), Korall and Taylor (2006), Moran et al (2007) and Triana-Moreno (2012).…”

Section: Discussionmentioning

confidence: 79%

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum

Yañez

Márquez

Morbelli

2016

An. Acad. Bras. Ciênc.

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The spore morphology and wall ultrastructure of Microlepia speluncae and Pteridium arachnoideum from the Paranaense Province were analyzed with LM, SEM and TEM and a comparative analysis was carried out. In both species the spores are covered by a three-dimensional network of threads branched and fused, tangentially arranged to the surface, and some free-end threads are also seen. The species were differentiated by morphology and the frequency of threads fusion and the networks distribution on the surface of the spores. In both species the exospore is two-layered in section, both layers are traversed by single or branched channels. The perispore is three-layered in section: the inner layer is adhered to the exospore, the middle layer is formed of a three-dimensional network of threads and the outer layer is discontinuous. The perispore ultrastructure of Microlepia speluncae was interpreted as formed of helical subunits displayed around a central channel. The spore morphology and perispore ultrastructure allow differentiating Microlepia from Pteridium but also to the other Dennstaedtiaceae genera that grow in the Paranaense Province. The results obtained allow establishing relationships that let us recognize different groups and gave a new reference to get a better knowledge of the family.

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Section: Discussionmentioning

confidence: 79%

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum

Yañez

Márquez

Morbelli

2016

An. Acad. Bras. Ciênc.

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“…2b). All previous studies of the perispore structure of members of Elaphoglossum subsection Muscosa have revealed papillate structures, so that this has been proposed as a synapomorphy of the subsection (Moran et al, 2007) (Fig. 2a).…”

mentioning

confidence: 90%

“…15 species, is well-defined by the ovatelanceolate, coriaceous, usually apically obtuse, densely scaly blades, and erose blade scales (Mickel & Atehortúa, 1980). Furthermore, all seven species studied have large, papillate, frequently collapsed spores that have been proposed as a synapomorphy of the subsection (Moran et al, 2007). In Bolivia, this subsection is represented by three species, E. atrorubens Mickel, E. blandum Rosenst., and E. engelii (H.…”

mentioning

confidence: 99%

A new species of Elaphoglossum sect. Lepidoglossa subsect. Muscosa (Dryopteridacae) with cristate spores

Ballenthien¹,

Dudenhöffer²,

Kessler³

2009

Brittonia

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Abstract. A new species from the Bolivian highlands is described as Elaphoglossum cristatum. It is very similar to E. engelii but is characterized by a (for subsect. Muscosa unique) cristate perispore structure with irregular deposits (versus papillate spores), more densely ciliate petiole scales (50-80 versus 10-30 cilia per scale), somewhat thicker blade texture, denser scale cover, and paler, more reddish rhizome scales.

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“…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). Moran, Garrison and Rouhan (2007) indicated that no known macromorphological or anatomical characters distinguish these two clades; however, three perispore characters are synapomorphic for subsect. Pachyglossa: the presence of cristae, spines and perforations.…”

Section: Introductionmentioning

confidence: 99%

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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Spore Morphology in Relation to Phylogeny in the Fern Genus Elaphoglossum (Dryopteridaceae)

Cited by 56 publications

References 8 publications

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum

Palynological analysis of Dennstaedtiaceae taxa from the Paranaense Phytogeographic Province that produce Trilete spores II: Microlepia speluncae and Pteridium arachnoideum

A new species of Elaphoglossum sect. Lepidoglossa subsect. Muscosa (Dryopteridacae) with cristate spores

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

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