Recognition of the tetraploid Polypodium calirhiza (Polypodiaceae), in western North America

Taxonomic study of the Polypodium californicum/glycyrrhiza complex in California reveals four taxa: a tetraploid, a triploid, and two diploids, P. californicum and P. glycyrrhiza. The tetraploid, here named Polypodium calirhiza, mimics some forms of P. californicum in southern California but is read...

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Veröffentlicht in:Madroño 1991-10, Vol.38 (4), p.233-248
Hauptverfasser: Whitmore, S.A. (University of California, Santa Barbara, CA), Smith, A.R
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Smith, A.R
description Taxonomic study of the Polypodium californicum/glycyrrhiza complex in California reveals four taxa: a tetraploid, a triploid, and two diploids, P. californicum and P. glycyrrhiza. The tetraploid, here named Polypodium calirhiza, mimics some forms of P. californicum in southern California but is readily distinct in northern and central parts of the state. It is probably of allopolyploid origin involving the two diploids, as judged by its morphological intermediacy and chromosome pairing in triploid hybrids with P. glycyrrhiza. A principal components analysis also demonstrates this intermediacy. Polypodium calirhiza shows a wider tolerance for different habitats and greater range than either of its putative parents. El estudio taxónomico del complejo Polypodium californicum/glycyrrhiza en California revela cuatro taxa: un tetraploide, un triploide, y dos diploides, P. californicum y P. glycyrrhiza. El tetraploide, aquí nombrado Polypodium calirhiza, mimetiza algunas formas de P. californicum en el sur de California pero es fácilmente distinguible de los areas de norte y centro del estado. Probablemente esta nueva especie sea de origen alopoliploide implicando los dos diploides a juzgar por su forma intermedia morfológicomente y su sinapsis cromósomico en híbridos triploides con P. glycyrrhiza. Un análisis de los componentes principales tambien demuestra esta naturaleza intermedia. Polypodium calirhiza demuestra una mejor tolerancia a mas diversos habitates y una area de distribution mas amplia que cualquiera de sus dos teoricos progenitores.
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Un análisis de los componentes principales tambien demuestra esta naturaleza intermedia. Polypodium calirhiza demuestra una mejor tolerancia a mas diversos habitates y una area de distribution mas amplia que cualquiera de sus dos teoricos progenitores.</abstract><cop>Berkeley, CA</cop><pub>California Botanical Society</pub><tpages>16</tpages></addata></record>
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ispartof Madroño, 1991-10, Vol.38 (4), p.233-248
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1943-6297
language eng
recordid cdi_pascalfrancis_primary_5141486
source Jstor Complete Legacy
subjects Allopolyploidy
ANATOMIA DE LA PLANTA
ANATOMIE VEGETALE
Biological and medical sciences
Biological taxonomies
CALIFORNIA
CALIFORNIE
Chromosomes
Diploidy
DISTRIBUCION NATURAL
DISTRIBUTION NATURELLE
ESPECE NOUVELLE
ESPECIES NUEVAS
FERNS
FOUGERE
Fundamental and applied biological sciences. Psychology
GEOGRAPHICAL DISTRIBUTION
HABITAT
HABITATS
HELECHOS
Hybridity
KEYS
NATURAL DISTRIBUTION
NEW SPECIES
PLANT ANATOMY
Plant cytology, morphology, systematics, chorology and evolution
PLANT MORPHOLOGY
Pteridophyta
Spores
Taxa
TAXONOMIA
TAXONOMIE
TAXONOMY
Tetraploidy
Triploidy
title Recognition of the tetraploid Polypodium calirhiza (Polypodiaceae), in western North America
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