Evolutionary relationships within the Neotropical, eusporangiate fern genus Danaea (Marattiaceae).
Abstract
Genera within the eusporangiate fern family Marattiaceae have long been neglected
in taxonomic and systematic studies. Here we present the first phylogenetic hypothesis
of relationships within the exclusively Neotropical genus Danaea based on a sampling
of 60 specimens representing 31 species from various Neotropical sites. We used DNA
sequence data from three plastid regions (atpB, rbcL, and trnL-F), morphological characters
from both herbarium specimens and live plants observed in the field, and geographical
and ecological information to examine evolutionary patterns. Eleven representatives
of five other marattioid genera (Angiopteris, Archangiopteris, Christensenia, Macroglossum,
and Marattia) were used to root the topology. We identified three well-supported clades
within Danaea that are consistent with morphological characters: the "leprieurii"
clade (containing species traditionally associated with the name D. elliptica), the
"nodosa" clade (containing all species traditionally associated with the name D. nodosa),
and the "alata" clade (containing all other species). All three clades are geographically
and ecologically widely distributed, but subclades within them show various distribution
patterns. Our phylogenetic hypothesis provides a robust framework within which broad
questions related to the morphology, taxonomy, biogeography, evolution, and ecology
of these ferns can be addressed.
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https://hdl.handle.net/10161/21807Published Version (Please cite this version)
10.1016/j.ympev.2007.09.015Publication Info
Christenhusz, MJM; Tuomisto, H; Metzgar, JS; & Pryer, KM (2008). Evolutionary relationships within the Neotropical, eusporangiate fern genus Danaea
(Marattiaceae). Molecular phylogenetics and evolution, 46(1). pp. 34-48. 10.1016/j.ympev.2007.09.015. Retrieved from https://hdl.handle.net/10161/21807.This is constructed from limited available data and may be imprecise. To cite this
article, please review & use the official citation provided by the journal.
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Kathleen M. Pryer
Professor of Biology

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