A phylogenetic analysis of plastid rbcL sequences indicates that Pellaea flavescens from Brazil is nested within the Old World species Pellaea viridis. The morphology of these two species is similar and P. flavescens is here considered to be a synonym of the older P. viridis. This fern may have been introduced to and subsequently naturalized in Brazil or, alternatively, the natural result of long distance dispersal.
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1 January 2013
Pellaea flavescens, a Brazilian Endemic, is a Synonym of Old World Pellaea viridis
Jefferson Prado,
Eric Schuettpelz,
Regina Y. Hirai,
Alan R. Smith
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American Fern Journal
Vol. 103 • No. 1
January 2013
Vol. 103 • No. 1
January 2013
cheilanthoid
ferns
phylogeny
Pteridaceae
rbcL