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An update and reassessment of fern and lycophyte diversity data in the Japanese Archipelago.


ABSTRACT: The fern and lycophyte flora of Japan comprising 721 native taxa (including subspecies and varieties) plus 371 interspecific hybrids was reassessed using a nearly comprehensively sampled distribution map at 10 km resolution vouchered by 216,687 specimens, up-to-date cytotaxonomic information covering 74% of the taxa, and an rbcL sequence dataset covering 97.9% of the taxa. Spatial distribution of species richness and phylogenetic diversity was visualized. Apomixis was observed in 11.0% of the native taxa whose reproductive modes are known. The number of sexually reproducing polyploid taxa (n?=?199) is less than sexual diploids (n?=?241), and 30 of them are evidently allopolyploid, in contrast with the low number of possible autopolyploids (n?=?4). Apomictic taxa were found to have smaller latitudinal ranges than sexual taxa or taxa with multiple reproductive modes. A morphological character dataset in Lucid format is provided for taxonomic identification of the native taxa.

SUBMITTER: Ebihara A 

PROVIDER: S-EPMC6831535 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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An update and reassessment of fern and lycophyte diversity data in the Japanese Archipelago.

Ebihara Atsushi A   Nitta Joel H JH  

Journal of plant research 20190916 6


The fern and lycophyte flora of Japan comprising 721 native taxa (including subspecies and varieties) plus 371 interspecific hybrids was reassessed using a nearly comprehensively sampled distribution map at 10 km resolution vouchered by 216,687 specimens, up-to-date cytotaxonomic information covering 74% of the taxa, and an rbcL sequence dataset covering 97.9% of the taxa. Spatial distribution of species richness and phylogenetic diversity was visualized. Apomixis was observed in 11.0% of the na  ...[more]

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