Cytogeography of the "Adiantum pedatum" complex (Pteridaceae, subfamily Adiantoideae)

@inproceedings{Nakato2005CytogeographyOT,
  title={Cytogeography of the "Adiantum pedatum" complex (Pteridaceae, subfamily Adiantoideae)},
  author={Narumi Nakato and Masahiro Kato},
  year={2005}
}
Widespread co-occurrence of multiple ploidy levels in fragile ferns (Cystopteris fragilis complex; Cystopteridaceae) probably stems from similar ecology of cytotypes, their efficient dispersal and inter-ploidy hybridization.
TLDR
High ploidy-level diversity and widespread cytotype coexistence in the C. fragilis complex match the well-documented patterns in some angiosperms, which could be facilitated by the perennial life-form of the species, its reproductive modes and efficient wind dispersal of spores.
THE HARDY FERN FOUNDATION
TLDR
A new species of Adiantum is described from California, endemic to northern California and currently known only from Shasta County, which is evergreen and is sometimes, but not always, associated with limestone.
Identifying a Cryptic Adiantum Population through DNA Barcoding
TLDR
Populations of Adiantum growing on serpentine barrens in Pennsylvania and Maryland have been identified as A. aleuticum (Rupr.) C.Paris and A. viridimontanum C.A.Paris, both of which are known from serpentine in New England and Canada.
Adiantum shastense, a new species of maidenhair fern from California
TLDR
This species is endemic to northern California and is currently known only from Shasta County and it is described after first being collected over a century ago and distinguish it from Adiantum jordanii andAdiantum capillus-veneris.
First insights into the evolutionary history of the Davallia repens complex
TLDR
It is hypothesize that there were at least two ancestral lineages distributed in the Malesian region and some polyploid genotypes dispersed outwards to shape the extant distribution through hybridization,polyploidization and apogamy.
Biogeographic disjunction between eastern Asia and North America in the Adiantum pedatum complex (Pteridaceae).
TLDR
The eastern Asian-North American disjunction in the complex is inferred to be the result of two intercontinental migrations, one from eastern Asia into North America in the late Tertiary and the other from North America back to eastern Asia in the Pleistocene.

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Botanists disagree about the relationship of the serpentine and the woodland members of the Adiantum pedatum complex in eastern North America. Whereas some recognize the two taxa as subspecies,
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