R. S. Viveros

Publications9
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Citations726
Highly Influential Citations11
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A community‐derived classification for extant lycophytes and ferns
TLDR
A modern, comprehensive classification for lycophytes and ferns, down to the genus level, utilizing a community‐based approach, that uses monophyly as the primary criterion for the recognition of taxa, but also aims to preserve existing taxa and circumscriptions that are both widely accepted and consistent with the understanding of pteridophyte phylogeny.
Amazon canga : the unique vegetation of Carajás revealed by the list of seed plants
The Floresta Nacional de Carajás (FLONA of Carajás) and the Parque Nacional dos Campos Ferruginosos (PNCF) are home to canga vegetation where 856 species distributed in 116 families of seed plants…
Two new species of Ctenitis (Dryopteridaceae) from South America and taxonomic notes on similar species
TLDR
Two new species of Ctenitis (Dryopteridaceae) from South America are described and illustrated and seven lectotypifications and two new synonyms are proposed.
Lycophytes and ferns composition of Atlantic Forest conservation units in western Paraná with comparisons to other areas in southern Brazil
This study surveyed lycophyte and fern species in four forest fragments in western Parana, Brazil, and compared them to 15 other fragments with different plant formations from the Atlantic Forest…
Typification of a Linnaean name in Gleicheniaceae (Polypodiopsida)
TLDR
Gleicheniaceae are an ancient fern family with about 157 species and six genera (PPG I 2016), but a great gap remains in both taxonomy and nomenclature.
Typification of the Linnaean name Onoclea polypodioides, type of the fern genus Gleichenia (Gleicheniaceae, Polypodiopsida)
TLDR
While conducting taxonomic studies in Gleicheniaceae, it was realized that the Linnaean name Onoclea polypodioides Linnaeus (1771: 306), the type species of Gleichenia, was not properly typified, as it is explained in the next paragraphs.
A new species and a new combination in Ctenitis (Dryopteridaceae) from South America
TLDR
The new species is from Peru and the new combination corresponds to the species known until now as C. pedicellata, and should be called C. nervata, based on the older name Aspidium nervatum.
Brazilian Flora 2020: Leveraging the power of a collaborative scientific network
A taxonomic monograph of the fern genus Ctenitis (Dryopteridaceae) in South America
Based on collections of 45 Herbaria in addition to newly collected specimens and some field observations, a taxonomic treatment for South American Ctenitis is provided, a hundred years after…