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Author: Mary Gunn
Publisher: CRC Press
ISBN: 9780869611296
Category : Science
Languages : en
Pages : 844
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Book Description
This text gives biographical accounts of the leading plant collectors and their activities in Southern Africa from the days of the East India Company until modern times.
Author: Mary Gunn
Publisher: CRC Press
ISBN: 9780869611296
Category : Science
Languages : en
Pages : 844
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Book Description
This text gives biographical accounts of the leading plant collectors and their activities in Southern Africa from the days of the East India Company until modern times.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Mary Gunn
Publisher:
ISBN:
Category :
Languages : en
Pages : 400
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Book Description
Author: John Hutchinson
Publisher:
ISBN:
Category : Africa, Southern
Languages : en
Pages : 776
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Book Description
Afrika, Florenwerke.
Author: Peter V. Bruyns
Publisher: Springer Nature
ISBN: 3030493997
Category : Science
Languages : en
Pages : 515
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Book Description
This book presents a new account of Euphorbia in southern Africa. Euphorbia is the second largest genus of plants in the world. Southern Africa enjoys a high diversity in Euphorbia and 170 species occur here naturally. Of these 170 species, 128 or 74% are endemic. Where most species of Euphorbia in the northern hemisphere are herbs or shrubs, most of those in southern African are succulent. These succulents range from small, almost geophytic forms where the tuber is larger than the above-ground parts to huge trees 6 to 15 m or more in height. Many of them are spiny. There are also small numbers of herbaceous species in southern Africa and many of these are also dealt with here. The last account of the succulent species for southern Africa was published in 1941 and much new data has accumulated since then. Our understanding of the relationships of the species in Euphorbia has also been greatly enhanced by recent analyses of DNA-data, which led to new and unexpected results. From this new information an entirely new classification was developed, in which Euphorbiawas divided into four subgenera. This provides the taxonomic framework for the presentation of our species here. Around ten new species have been described and these are presented in detail for the first time. This monograph is made up of two volumes. Volume 1 contains an extensive introductory chapter with an overview of the genus in the region, emphasizing many of its important and distinctive features. This is followed by Chapter 2, which deals with subgenus Athymalus. Of the four subgenera, this one is by far the most diverse in southern Africa, with 80 species. Volume 2 contains Chapters 3 (subg. Chamaesyce, 34 species), 4 (subg. Esula, 11 species) and 5 (subg. Euphorbia, 45 species), as well as an additional Chapter 6 covering the remarkable diversity of subg. Euphorbia in Moçambique. Each of Chapters 2 to 5 includes a key to all the species, followed by an account of each of them. This account includes synonymy, a description, data on distribution and habitat, line-drawings of floral features and other diagnostic details, notes on how the species is distinguished from its closest relatives and a brief history of its discovery. Several colour photographs are included for each species, illustrating its habitat, vegetative habit and flowering features, demonstrating key points distinguishing it from others and often showing its variability. Euphorbia is an important component of the vegetation in many of the drier parts of southern Africa. This book is based on a thorough evaluation of the vast herbarium record for southern African members of Euphorbia, on the extensive field-work conducted in the region and the wide taxonomic experience of the author. It is believed that both the professional botanist and the layman will find much that is new and informative in this monograph.
Author: Neil R. Crouch
Publisher: Penguin Random House South Africa
ISBN: 1431701432
Category : Science
Languages : en
Pages : 779
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Book Description
This comprehensive guide to the ferns of southern Africa (covering South Africa, Swaziland, Lesotho, Botswana and Namibia) throws new light on a fascinating category of plants that is little known by the general public . User-friendly and accessible, it will enable quick and sure identification of all 321 ferns known to occur in the region. Each species features a double-page spread with a full plate of photographs (including close-ups); informative line drawings where necessary; clear text descriptions; tables that highlight differences between similar-looking species; and distribution maps based on years of intensive fieldwork. In addition, there are identification keys to families, genera and species. To compile this book the authors travelled extensively and took some 30 000 photographs, even finding several new species of fern. They are all treated in this guide – some described here for the first time. This unique and beautiful volume will become the standard reference book on the ferns of southern Africa.
Author: Jennifer Speake
Publisher: Taylor & Francis
ISBN: 9781579584405
Category : Travel
Languages : en
Pages : 566
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Book Description
Containing more than 600 entries, this valuable resource presents all aspects of travel writing. There are entries on places and routes (Afghanistan, Black Sea, Egypt, Gobi Desert, Hawaii, Himalayas, Italy, Northwest Passage, Samarkand, Silk Route, Timbuktu), writers (Isabella Bird, Ibn Battuta, Bruce Chatwin, Gustave Flaubert, Mary Kingsley, Walter Ralegh, Wilfrid Thesiger), methods of transport and types of journey (balloon, camel, grand tour, hunting and big game expeditions, pilgrimage, space travel and exploration), genres (buccaneer narratives, guidebooks, New World chronicles, postcards), companies and societies (East India Company, Royal Geographical Society, Society of Dilettanti), and issues and themes (censorship, exile, orientalism, and tourism). For a full list of entries and contributors, a generous selection of sample entries, and more, visit the Literature of Travel and Exploration: An Encyclopedia website.
Author: Hugh F. Glen
Publisher:
ISBN: 9781919976549
Category : Botanical illustration
Languages : en
Pages : 489
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Book Description
Author: Saul Dubow
Publisher: Manchester University Press
ISBN: 1526119781
Category : History
Languages : en
Pages : 252
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Book Description
This collection, dealing with case studies drawn from South Africa, Zimbabwe, Mozambique and Mauritius, examines the relationship between scientific claims and practices, and the exercise of colonial power. It challenges conventional views that portray science as a detached mode of reasoning with the capacity to confer benefits in a more or less even-handed manner. That science has the potential to further the collective good is not fundamentally at issue, but science can also be seen as complicit in processes of colonial domination. Not only did science assist in bolstering aspects of colonial power and exploitation, it also possessed a significant ideological component: it offered a means of legitimating colonial authority by counter-poising Western rationality to native superstition and it served to enhance the self-image of colonial or settler elites in important respects. This innovative volume ranges broadly through topics such as statistics, medicine, eugenics, agriculture, entomology and botany.
Author: Umberto Quattrocchi
Publisher: CRC Press
ISBN: 1000897710
Category : Medical
Languages : en
Pages : 647
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Book Description
This volume provides the origins and meanings of the names of genera and species of extant vascular plants, with the genera arranged alphabetically from R to Z.
