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Author: Botanical Society of the British Isles
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 102
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Book Description
Author: Botanical Society of the British Isles
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 102
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Book Description
Author: Leif Bersweden
Publisher: Short Books
ISBN: 1780723350
Category : Nature
Languages : en
Pages : 276
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Book Description
He has just a few months to complete his quest – no one has ever done it before within one growing season – and it will require ingenuity, stamina and a large dose of luck.As he battles the vagaries of the British climate, feverishly chasing each emerging bloom, Leif Bersweden takes the reader on a remarkable botanical journey.This study of the 52 native species is a fantastic gateway into the compendious world of orchids – one that will open your eyes to the rare hidden delights to be found on our doorstep.Like Two Owls at Eton and My Family and Other Animals, The Orchid Hunter is a charming account of a precocious adolescent’s obsession with the natural world.Leif’s enthusiasm for his quest is infectious, as is the quiet conviction with which he keeps at it, showing how plant hunting can be the ultimate mindful activity.
Author: National Agricultural Library (U.S.)
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1352
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Book Description
Author: A. O. Chater
Publisher:
ISBN: 9780956575005
Category : Cardiganshire (Wales)
Languages : en
Pages : 930
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Book Description
Author: National Agricultural Library (U.S.)
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1392
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Book Description
Author: Thomas A. Cope
Publisher:
ISBN:
Category : Grasses
Languages : en
Pages : 620
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Book Description
It is now over 50 years since the grasses of the British Isles were last treated to a book of their own, Hubbard's famous account of 1954, though two more editions were published in 1968 and 1984, with fairly limited changes. Enough has happened to the taxonomy of the family to justify a new BSBI Handbook. Hubbard's original account, still available after more than half a century, has been overtaken by events in an ever-developing taxonomic world and will not be revised again. This new Handbook therefore attempts to bridge the gap between the taxonomy of the 1980s and the new molecular phytogenies that are currently being explored, so that what is being offered is something that users will feel comfortable with (by departing no more than absolutely necessary from familiar taxonomy), but which hints at changes that may be afoot in the near future.
Author: Botanical Society and Exchange Club of the British Isles
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 704
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Book Description
Author: FAITH. ANSTEY
Publisher:
ISBN: 9780993493324
Category :
Languages : en
Pages :
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Book Description
Author: Christopher D. Manning
Publisher: Cambridge University Press
ISBN: 1139472100
Category : Computers
Languages : en
Pages :
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Book Description
Class-tested and coherent, this textbook teaches classical and web information retrieval, including web search and the related areas of text classification and text clustering from basic concepts. It gives an up-to-date treatment of all aspects of the design and implementation of systems for gathering, indexing, and searching documents; methods for evaluating systems; and an introduction to the use of machine learning methods on text collections. All the important ideas are explained using examples and figures, making it perfect for introductory courses in information retrieval for advanced undergraduates and graduate students in computer science. Based on feedback from extensive classroom experience, the book has been carefully structured in order to make teaching more natural and effective. Slides and additional exercises (with solutions for lecturers) are also available through the book's supporting website to help course instructors prepare their lectures.
Author: Clive A. Stace
Publisher:
ISBN: 9780901158482
Category : Botany
Languages : en
Pages : 0
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Book Description
Vascular plant hybrids are numerous and constitute an important feature of our vegetation, but all too often they have been neglected by botanists. Some hybrids between native species are rare, sterile and ephemeral, but others reproduce vegetatively or by seed and have spread beyond the areas where their parents coexist. In addition, numerous hybrids have escaped from gardens to become established in the wild. Interspecific hybridisation is particularly significant as it represents a major evolutionary pathway in flowering plants; frequently it alters the characteristics of both native and alien taxa and it generates new species. The hybrid flora of the British Isles has been studied in more detail than that of any other region, and it therefore provides an ideal opportunity to study the occurrence of hybrids in wild vegetation. This book provides detailed accounts of the 909 hybrids reliably recorded in the wild in the British Isles. Of particular interest to BSBI members are the comprehensive identification notes, including a summary of the differences from the parents, enabling naming and recording of hybrids to a degree not attainable previously. The habitats of the hybrids are outlined and detailed accounts of their distributions provided, with notes on the discovery of many hybrids. There are 388 novel maps illustrating the records of the commoner hybrids in relation to those of their parents. Known chromosome numbers are given for each hybrid and its parents, and information is provided on the hybrid's fertility/sterility and its capacity for vegetative reproduction. Experimental and molecular studies of the hybrids in the British Isles and elsewhere in their ranges are summarised. Briefer notes are given on a further 156 hybrids, including some which are erroneously or doubtfully recorded and others which might potentially occur as escapes from cultivation.
