An important element of the biogeography of species is the geographic aspects of
speciation. The geography of species has a role in the processes of speciation which have a …

The species of continental tropical American ferns are concentrated in three primary
geographic areas, the Mexican, the Andean and the Brazilian, and two secondary areas, the …

Premise Extrafloral nectaries have mainly been studied in angiosperms, but have also been
reported in 39 fern species. Here we provide a global review of nectaries in ferns and …

The occurrence of nectaries in ferns is reviewed, and a new report of nectaries in the
Polypodium squamatum group is made. Nectars of five species of Polypodium (P …

O presente trabalho apresenta a análise da pteridoflora ocorrente em uma área paludosa
em remanescente preservado de floresta de restinga, na planície costeira do estado do Rio …

Pleopeltis is a genus of the family Polypodiaceae, whose circumscription is still unresolved.
The genus comprises about 90 species distributed mainly in the Neotropics. The …

Melpomene peruviana is one of the ecologically toughest fern species that prospers under
climatically extreme conditions between 3400-5200 meters above sea level and …

A floristic survey of the Polypodiaceae in the Parque Estadual do Itacolomi is presented.
This park is located in the southern limit of the Espinhaço Range, between the municipalities …

(Estudios epidérmicos en helechos y licófitas medicinales de Provincia de Córdoba,
Argentina). Se realiza un análisis epidérmico de los órganos vegetativos y reproductivos de …

Populações de gametófitos e esporófitos de Polypodium hirsutissimum ocorrentes em mata
mesofítica semidecídua do Estado de São Paulo, foram acompanhadas em campo durante …