The Sections Of Begonia

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The Sections Of Begonia

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Author : J. Doorenbos
language : en
Publisher:
Release Date : 1998

The Sections Of Begonia written by J. Doorenbos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Nature categories.

The Sections Of The Genus Begonia

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Author : Andrey I. Baranov
language : en
Publisher:
Release Date : 1974

The Sections Of The Genus Begonia written by Andrey I. Baranov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Begonias categories.

A Revision Of Begonia Section Gobenia

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Author : Mark C. Tebbitt
language : en
Publisher:
Release Date : 2022

A Revision Of Begonia Section Gobenia written by Mark C. Tebbitt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Begonias categories.

Tuberous Begonias

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Author : Mark Tebbitt
language : en
Publisher:
Release Date : 2020-09

Tuberous Begonias written by Mark Tebbitt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09 with categories.

A comprehensive, accessible study of the 14 wild, Andean species of tuberous Begonia and their garden hybrids. This book updates the taxonomy of the tuberous begonias and discusses their natural history, conservation, artificial selection, and cultivation.

Some Nomenclatural Changes In The Sections Of Begonia L

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Author : Andrey I. Baranov
language : en
Publisher:
Release Date : 1972

Some Nomenclatural Changes In The Sections Of Begonia L written by Andrey I. Baranov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.

Studies In Begoniaceae The Sections Of Begonia

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Author :
language : en
Publisher:
Release Date : 1984

Studies In Begoniaceae The Sections Of Begonia written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Begoniaceae categories.

Seed Micromorphology Of Neotropical Begonias

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Author : Anton De Lange
language : en
Publisher:
Release Date : 1999

Seed Micromorphology Of Neotropical Begonias written by Anton De Lange and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.

The seeds of about 235 Neotropical Begonia species, representing almost all recognized American Begonia sections, were studied using scanning electron microscopy. The seeds show an appreciable diversity in size, shape, and micromorphology, which is helpful in the delimitation of sections and sometimes also of species. Mean seed length varies from 235 m in Begonia filipes to 1450 m in B. fruticosa; most seeds have a length between 300 m and 600 m. The shape of the seeds varies from almost globular to narrowly elliptic, and the length to width ratio ranges from 1.2 in B. hexandra to 8.1 in B. fruticosa. Further differences exist in the shape of the testal cells, the undulation of the anticlinal walls, the bulging of the outer periclinal walls, and the pattern and roughness of the cuticle. Five of the 15 mainly Brazilian, five of the 12 Andean and Guianan, and one of the eight middle American sections have a seed structure that is characteristic at the sectional level. All these sections have a relatively restricted geographical distribution, and they may differ in growth form or habitat. Most species of the other sections, including the larger and more widely distributed sections Begonia, Gireoudia, and Knesebeckia, have seeds conforming to the ordinary seed type. In a number of the sections, the structural differences of the seeds are nicely correlated with differences in growth form and/or in means of dispersal. In contrast to the African begonias, the great majority of the Neotropical begonias have anemoballistic dispersal. Seeds may be adapted to wind dispersal by extended micropylar and/or chalazal ends with inflated, air-filled cells, such as in the Brazilian sections Solananthera, Trendelenburgia, and Enita and in the Andean section Rossmannia, or by a more pronounced surface with deep, collapsed testal cells, such as in sections Gobenia and Scheidweileria. Zooballistic dispersal by passing animals is supposed to be present in section Casparya. The seeds of sections Casparya and Trachelocarpus have very pronounced cuticular patterns and may be secondarily dispersed by rain wash or by adhering to animals. No distinct indications for an intercontinental relationship between Neotropical, African, and Asiatic sections could be established.

Refuge Begonias A Pleistocene Radiation

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Author : Jurriaan M. de Vos
language : en
Publisher:
Release Date : 2007

Refuge Begonias A Pleistocene Radiation written by Jurriaan M. de Vos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

Studies In The Begoniaceae

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Author : Andrey I. Baranov
language : en
Publisher:
Release Date : 1981

Studies In The Begoniaceae written by Andrey I. Baranov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Begoniaceae categories.

A Revision Of Central American Species Of Begonia Section Gireoudia Begoniaceae

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Author : Kathleen Burt-Utley
language : en
Publisher:
Release Date : 1985

A Revision Of Central American Species Of Begonia Section Gireoudia Begoniaceae written by Kathleen Burt-Utley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Begoniaceae categories.