Species of Aspleniaceae, Dryopteridaceae, Polypodiaceae and Woodsiaceae are mostly clustered at the upper left corner of the ordination diagram.
Family Number of genera Number of species Pteridaceae 12 44 Polypodiaceae 3 10 Dryopteridaceae 2 3 Woodsiaceae 2 3 Aspleniaceae 1 2 Selaginellaceae 1 8 Anemiaceae 1 2 Thelypteridaceae 1 5 Equisetaceae 1 1 Marsileaceae 1 1 Tectariaceae 1 1 Table 2.
Sori elongate with indusia; leaf stalk brown, at least near base Aspleniaceae (in part)
Leaves lacking transparent, needlelike hairs (hairs have blunt tips, if present); sori with indusia; plants widespread in various habitats Aspleniaceae (in part)
Schneider (1997) studied the root anatomy of the Aspleniaceae and reported spiral wall thickenings in the outer cortex of some species.
2011) investigated the structure of these root cortical cells for 96 specimens (representing 72 species) of Aspleniaceae and designated them as helical cell wall thickenings (henceforth called 'thickenings').
2012) based on molecular and morphological data, improved greatly our knowledge about relationships among the major lineages of ferns, but in none of these studies was the presence of the thickenings cited in Polypodiaceae (Eupolypods I) or Aspleniaceae (Eupolypods II).
2007; Rothfels, 2008), Aspleniaceae and Dryopteridaceae (Leon and Valencia, 1988; Leon and Young, 1999; Leon et al.
Laminae that were once pinnate, with an acroscopic segment, pointed to a member of the Aspleniaceae (Asplenium sessilifolimn Desv.
In the taxonomic treatment of Aspleniaceae for the "Flora de la Republica de Cuba", we recognized only Asplenium L.
Typical features of Aspleniaceae are clathrate petiole scales with glandular tips when young.
Phylogeny of Aspleniaceae inferred from rbcL nucleotide sequences.
In addition, we examined species of Aspleniaceae, Blechnaceae, Onocleaceae, and Thelypteridaceae, which were all included with the Woodsiaceae in the eupolypods II clade of Smith et al.
Hemidictyum in Woodsiaceae is sister to Aspleniaceae with low support (PP = 0.
Together, Hemidictyum and Aspleniaceae are sister to the rest of eupolypods II, Hemidictyum is sister to the asplenioid ferns; then the clade of Woodsiaceae IV and Woodsiaceae V (Rhachidosorus, Diplaziopsis and Homalosorus, in shadow in Fig.