Cultivation, propagation, apomixis, horticulture.

Cultivation, propagation, apomixis, horticulture.

The most comprehensiveand authoritative accountof lavender. Describingsome 39 species, theirhybrids and cultivars, thisbook brings togethertheir taxonomy,distribution, history,cultivation, propagation,and an overview of theircommercial products,essential oils and chemistry. Lavishly illustrated withRHS Gold Medal award winning paintings bybotanical artists Christabel King, Georita Harriottand Joanna Langhorne. With 31 botanicalpaintings, 45 line drawings and many colourphotographs.

Birches or Betula are among the most attractive and common trees in the landscape and in gardens. The Genus Betula is the first monograph published on this plant group, the species of which have been notoriously difficult to identify. Accounts are given of all known birches found in Europe, Asia and North America, both white and brown barked, and a key for their identification. An invaluable tool for arboriculturalists and professional and amateur gardeners, and will also appeal to lovers of botanical art.

Though biogeography may be simply defined--the study of the geographic distributions of organisms--the subject itself is extraordinarily complex, involving a range of scientific disciplines and a bewildering diversity of approaches. For convenience, biogeographers have recognized two research traditions: ecological biogeography and historical biogeography. This book makes sense of the profound revolution that historical biogeography has undergone in the last two decades, and of the resulting confusion over its foundations, basic concepts, methods, and relationships to other disciplines of comparative biology. Using case studies, the authors explain and illustrate the fundamentals and the most frequently used methods of this discipline. They show the reader how to tell when a historical biogeographic approach is called for, how to decide what kind of data to collect, how to choose the best method for the problem at hand, how to perform the necessary calculations, how to choose and apply a computer program, and how to interpret results.

The Genus Tulipa is the most complete survey of tulip species to date. Each species is illustrated Diana Everett, with accompanying colour photographs of the plants in habitat and distribution maps. The high level of detail provided in this book makes identification possible for the many species of tulips. Additional material includes check lists of tulip species and their synonyms, as well as country by country check list; glossary with diagrams; information on nurseries selling tulips; and full bibliography.

This volume includes an introduction to The Global Flora series and an overview of an angiosperm poster. The poster visually illustrates relationships of all angiosperm families (following APG IV) and flower images representing 269 plant families. The poster also lists important characters for major grades and clades.