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Adetogramma (Polypodiaceae), a new monotypic fern genus segregated from Polypodium
Ist Teil von
PhytoKeys, 2017-01, Vol.78 (78), p.109-131
Ort / Verlag
Bulgaria: Pensoft Publishers
Erscheinungsjahr
2017
Link zum Volltext
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
Polypodiaceae is one of the most diverse and abundant families of ferns in tropical and subtropical forests. Despite multiple studies investigating its phylogeny and taxonomy, several generic boundaries within the family still need clarification. One of the most problematic circumscriptions is that of
L., and one species that still contributes to this uncertainty is
Hook. The main goal of this study was to use molecular and morphological data to clarify the relationships of
inside the polygrammoid clade. Sequences from three plastid regions (cpDNA -
L,
4 and
4-
S IGS) from fifty species belonging to thirty-two genera of Polypodiaceae were analyzed using maximum likelihood and Bayesian inference.
constitutes an isolated lineage among the neotropical polygrammoid ferns, close to
and the grammitids, and is recognized here in a new genus. It can be distinguished by its entire leaves with free veins and peltate, pedicellate, lanceolate paraphyses. A new combination,
, is proposed and a new taxonomic treatment is presented; its conservation status was assessed using IUCN Red List Categories and Criteria.