David a pearman (2 Ergebnisse)

Soft cover. Zustand: New. The introduction sets out the background, the previous compilations, and the very extensive developments over the last century This is followed by accounts for all the native species, with the exception of the three largest critical groups - Rubus, Hieracium & Taraxacum. For completeness this includes up to 40 species whose recent status has shuffled between native and alien. For each species there is: - the first Literature reference, commencing with the works of William Turner. - the first Evidence (herbarium specimen, manuscript or other) - a relatively critical account of every significant national flora or herbal since 1538. - a list of the principal periodicals from 1666 to date. - lists of census catalogues and lists of plants. - details of county floras with a very good history of discovery. - books on the history of botany. - developments in Ireland, Scotland and Wales. - major herbaria whose contents are known, however broadly. These are supplemented by a list of the discoverers of each plant, where known and with sources (~ 500 names) and lists of the plants they discovered. Over 900 references. …

Hardcover. Zustand: New. This book provides detailed accounts of the 909 hybrids reliably recorded in the wild in the British Isles. The habitats of the hybrids are outlined and detailed accounts of their distributions provided. 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. There is an extensive bibliography of almost 3,000 references.…