Tryonia, a new taenitidoid fern genus segregated from Jamesonia and Eriosorus (Pteridaceae)

Cochran, Alyssa T.; Prado, Jefferson; Schuettpelz, Eric

doi:10.3897/phytokeys.35.6886

Cited by 26 publications

(45 citation statements)

References 16 publications

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“…(2014) was followed, except that the annealing temperature was reduced to 45°C. Visualization and cleanup of PCR products, as well as sequencing, followed previously published protocols (Schuettpelz & al., 2006;Schuettpelz & Pryer, 2007;Cochran & al., 2014). For some individuals, sequences were already published and a total of 110 sequences were thus simply downloaded from GenBank.…”

Section: Methodsmentioning

confidence: 99%

“…For the larger region, the primers (Table 1) and amplification protocol of Schuettpelz & al. (2006) were utilized, whereas for the smaller region, the primers (Table 1) (Table 1), but the amplification protocol of Cochran & al. (2014) was followed.…”

Section: Methodsmentioning

confidence: 99%

“…For rbcL, a large segment of the gene was generally amplified (following Schuettpelz & Pryer, 2007); however, in some cases it was necessary to amplify this segment in two parts due to the quality of the genomic DNA extraction. For rpoA (a plastid gene coding for the RNA polymerase alpha subunit), primers were again newly developed (Table 1) and the protocol of Cochran & al. (2014) was followed, except that the annealing temperature was reduced to 45°C.…”

Section: Methodsmentioning

confidence: 99%

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A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data

Schuettpelz

Chen

Kessler

et al. 2016

TAXON

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data

Schuettpelz

Chen

Kessler

et al. 2016

TAXON

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“…Estudios moleculares realizados por Cochran, Prado & Schuettpelz (2014), también sirvieron para descubrir que un clado del grupo Eriosorus y Jamesonia estaba más relacionado a otros géneros taenitoides como: Austrogramme E. Fourn., Pterozonium Fée, Syngramma J.…”

Section: Diagnóstica Al Género Eriosorusunclassified

Novedades en Jamesonia y Tryonia (Pteridaceae) para el Neotrópico.

Rojas-Alvarado¹

2018

abm

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ResumenTres especies nuevas de Jamesonia Hook. & Grev. para el Neotrópico son descritas aquí: J. erecta A. Rojas, J. panamensis A. Rojas y J. retroflexa A. Rojas. La primera especie se caracteriza por rizoma robusto y ascendente; frondas cortas y ascendentes; lámina estrecha; rachis recto a levemente flexuoso, lámina adaxialmente glabra y abaxialmente con pelos glandulares. La segunda especie tiene distintivamente estípite atropurpúreo a negro, lustroso y glabro; lámina 1-pinnada-pinnatifida o hasta 2-pinadas basalmente, con base truncada; segmentos terminales con dientes agudos, pelos sobre la superficie abaxial rígidos e hialinos, y distribuidos a 1850-2200 m. La tercera especie es reconocida por la lámina oblonga; rachis pardo y flexuoso; pinnas ascendentes; pínnulas retroflexas; segmentos apicales que terminan en particiones ampliamente dicotómicas; venas terminado en puntas oscuras y distribuidas a mayor altitud (3500 m). En el género Tryonia Schuettp., J. Prado & A.T. Cochran se describe a T. macrophylla A. Rojas, y difiere de T. myriophylla (Sw.) Schuettp., J. Prado & A.T. Cochran. por rizoma y base del estípite escamosos; estípite y raquis pardo-rojizo; frondas largas (150-200 cm), conocidas de Colombia y distribuidas a mayor distribución altitudinal (2450-2740 m). Seguidamente se combina a Gymnogramma glandulifera Hieron. bajo el género Jamesonia y se registra para Costa Rica y Mesoamérica a Jamesonia rufescens (Fée) Christenh.Palabras clave: Eriosorus, helechos, nuevas especies, nuevos taxones, Polypodiales, Pteridophyta. Abstract Novelties in Jamesonia Hook. & Grev. and Tryonia Schuettp., J. Prado & A.T. Cochran (Pteridaceae) from the NeotropicsFive new species of Jamesonia Hook. & Grev. from the Neotropics are described here: J. erecta A. Rojas, J. panamensis A. Rojas and J. retroflexa A. Rojas. The first species is characterized by robust and ascendent rhizome; fronds short ascendent; blade narrow; rachis straight to slightly flexuous, blade adaxialy glabrous and abaxially with glandular hairs. The second species distinctively has stipe atropurpureous to black, lustrous and glabrous; blade 1-pinnatepinnatifid or until 2-pinnate basally, with base truncate; ending segments with acute teeth, hairs on abaxial surface rigid and hyaline, and distributed at 1850-2200 m. The third species is recognized by blade oblong; rachis brown and flexuous; pinnae ascendent; pinnules retroflexed; terminal segments ending in broadly dichotomous partitions; veins ending in dark tips and distributed at high altitudinal distribution (3500 m). In the Tryonia Schuettp., J. Prado & A.T. Cochran genus T. macrophylla A. Rojas is described, and differs from T. myriophylla (Sw.) Schuettp., J. Prado & A.T. Cochran. by its rhizome and stipe base scaly; stipe and rachis reddish-brown; fronds long (150-200 cm), known from Colombia and distributed at high altitudinal elevation (2450-2740 m). After that, Gymnogramma glandulifera Hieron. is combined and Jamesonia rufescens (Fée) Christenh. is registered from Costa Rica and Mesoamerica.

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“…For the genus Blechnum L. we followed Perrie et al (2014). For Tryonia J. Prado, A. T. Cochran we followed Cochran et al (2014), and for Mickelia R. C. Moran et al we followed Moran et al (2010). Abbreviations of the names of the authors of species follow the Species List of the Flora of Brazil (Prado & Sylvestre 2015).…”

Section: Sampling and Data Processingmentioning

confidence: 99%

Distribution patterns of ferns and lycophytes in the Coastal Region of the state of Rio Grande do Sul, Brazil

2016

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A survey of ferns and lycophytes of the Coastal Region of the state of Rio Grande do Sul (CRRS) was performed based on fi eld work and collections of the main regional herbaria. Th e following were evaluated for each species: preferential habits (terrestrial, epiphytic or aquatic), geographic distribution patterns and habitats (forest, grassland, and wetland). Th e occurrence of a latitudinal gradient in diversity was tested over fi ve latitudinal ranges using the Sørensen Similarity Index. A total of 17 lycophyte and 206 fern species representing 28 families was found between the latitudes of 29° and 34°S. Exclusively terrestrial species were predominant (162), with the majority (113) exhibiting wide Neotropical distributions, followed by species that also occurred in the state of Paraná (44). Th e forest habitat harbored the greatest number of species (159), while grasslands had the fewest (26). Cluster analysis showed pronounced fl oristic diff erentiation among latitudinal Ranges III (31°01' to 32°S) and IV (32°01' to 31°S), with a similarity index of only 0.41. Our results demonstrate a strong north-to-south reduction in species richness in the study area, which is related to environmental conditions along the latitudinal gradient and, especially, microclimatic diff erences in the transition zone between the Atlantic Forest and Pampa biomes.

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Tryonia, a new taenitidoid fern genus segregated from Jamesonia and Eriosorus (Pteridaceae)

Cited by 26 publications

References 16 publications

A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data

A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data

Novedades en Jamesonia y Tryonia (Pteridaceae) para el Neotrópico.

Distribution patterns of ferns and lycophytes in the Coastal Region of the state of Rio Grande do Sul, Brazil

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