Par S M Xico
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A Generic Classification Of The Thelypteridaceae
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Author : Susan E Fawcett
language : en
Publisher:
Release Date : 2020
A Generic Classification Of The Thelypteridaceae written by Susan E Fawcett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Thelypteridaceae categories.
The Thelypteridaceae is among the largest fern families, with over 1000 species, and comprises about 10% of all fern diversity. The family is cosmopolitan and most diverse near the equator, although species range as far north as Greenland and Alaska, and as far south as southern New Zealand. The generic classification of the Thelypteridaceae has been the subject of much controversy among authors. Proposed taxonomic systems have varied from recognizing more than 1000 species in the family within a single genus, Thelypteris, to systems favoring upwards of 30 genera. Insights on intrafamilial relationships have been gained from recent phylogenetic studies, especially for the Neotropics, however, in the most recent classification, 10 of 30 recognized genera are either non-monophyletic or untested. In the present study, we sequenced nDNA across 400 loci for 621 accessions, representing all recognized genera. Our phylogenetic results, coupled with morphological study, provide a foundation for our new generic classification system. Major taxonomic changes include the recircumscription of 14 genera, descriptions of four new genera and three subgenera, the elevation of three sections to generic status, the resurrection of one genus, the inclusion of two genera in synonymy, and 181 new combinations. Our newly recognized monophyletic genera demonstrate greater geographic coherence than previous taxonomic concepts suggested. Additionally, our results demonstrate that certain morphological characters, such as frond division, are evolutionarily labile, and are the result of repeated instances of convergent evolution, and are thus inadequate for defining genera.
Materials Para Una Cartografie Mexicana Por El Ingeniero Lic Manuel Orozco Y Berra Edicion De La Sociedad De Geografia Y Estadistica
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Author : Manuel Orozco y Berra
language : es
Publisher:
Release Date : 1871
Materials Para Una Cartografie Mexicana Por El Ingeniero Lic Manuel Orozco Y Berra Edicion De La Sociedad De Geografia Y Estadistica written by Manuel Orozco y Berra and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1871 with Mexico categories.
Materiales Para Una Cartograf A Mexicana
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Author : Manuel Orozco y Berra
language : es
Publisher:
Release Date : 1871
Materiales Para Una Cartograf A Mexicana written by Manuel Orozco y Berra and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1871 with Cartography categories.
Materiales Para Una Cartografie Mexicana
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Author : Manuel Orozco y Berra
language : es
Publisher:
Release Date : 1871
Materiales Para Una Cartografie Mexicana written by Manuel Orozco y Berra and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1871 with categories.
Nouveau Dictionnaire Espagnol Francais Et Francais Espagnol Avec La Prononciation Figuree Dans Les Deux Langues
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Author : Marie-Jean Blanc Saint-Hilaire
language : fr
Publisher:
Release Date : 1860
Nouveau Dictionnaire Espagnol Francais Et Francais Espagnol Avec La Prononciation Figuree Dans Les Deux Langues written by Marie-Jean Blanc Saint-Hilaire and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1860 with categories.
Catalogue Of Autographs And Manuscripts Printed Books On The Inquisition And Association Books
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Author : Willson Wilberforce Blake
language : en
Publisher:
Release Date : 1909
Catalogue Of Autographs And Manuscripts Printed Books On The Inquisition And Association Books written by Willson Wilberforce Blake and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1909 with Autographs categories.
Index Catalogue Of The Library Of The Surgeon General S Office United States Army
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Author : Library of the Surgeon-General's Office (U.S.)
language : en
Publisher:
Release Date : 1891
Index Catalogue Of The Library Of The Surgeon General S Office United States Army written by Library of the Surgeon-General's Office (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1891 with Medical libraries categories.
The Writings Of Alonso De La Vera Cruz
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Author : Alonso de la Vera Cruz (fray)
language : en
Publisher:
Release Date : 1967
The Writings Of Alonso De La Vera Cruz written by Alonso de la Vera Cruz (fray) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with History categories.
Index Catalogue Of The Library Of The Surgeon General S Office United States Army
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Author : National Library of Medicine (U.S.)
language : en
Publisher:
Release Date : 1961
Index Catalogue Of The Library Of The Surgeon General S Office United States Army written by National Library of Medicine (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Incunabula categories.
Nueva Colecci N De Documentos Para La Historia De M Xico C Dice Mendieta Documentos Franciscanos Siglos Xvi Y Xvii 1892 2 V
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Author : Joaquín García Icazbalceta
language : es
Publisher:
Release Date : 1892
Nueva Colecci N De Documentos Para La Historia De M Xico C Dice Mendieta Documentos Franciscanos Siglos Xvi Y Xvii 1892 2 V written by Joaquín García Icazbalceta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1892 with Mexico categories.