Pines, 2nd revised edition: Drawings and Descriptions of the Genus Pinus, Aljos Farjon
Автор: Bharathi Название: Momordica genus in Asia - An Overview ISBN: 813221031X ISBN-13(EAN): 9788132210313 Издательство: Springer Рейтинг: Цена: 130610.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: Illustrated with color maps and photographs depicting habitat, morphology and distribution of individual taxa, this book collects information on Asiatic Momordica, including taxonomy, cytogenetics, crop improvement, origin, ethnobotany and crop production.
Автор: Keith A. Powell; Annabel Renwick; John F. Peberdy Название: The Genus Aspergillus ISBN: 1489909834 ISBN-13(EAN): 9781489909831 Издательство: Springer Рейтинг: Цена: 217680.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: Proceedings of a symposium held in Canterbury, United Kingdom, April 5-8, 1993.
Автор: K.A. Lesins; I. Lesins Название: Genus Medicago (Leguminosae) ISBN: 9400996365 ISBN-13(EAN): 9789400996366 Издательство: Springer Рейтинг: Цена: 95770.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: It was not until 1945 in Sweden that work on alfalfa came to the foreground, when the senbor author was assigned investi- gations on alfalfa seed setting by Dr. Erik Akerberg, then director of the Swedish Seed Association branch station at ffituna.
With more than 500 species distributed all around the Northern Hemisphere, the genus Quercus L. is a dominant element of a wide variety of habitats including temperate, tropical, subtropical and mediterranean forests and woodlands. As the fossil record reflects, oaks were usual from the Oligocene onwards, showing the high ability of the genus to colonize new and different habitats.
Such diversity and ecological amplitude makes genus Quercus an excellent framework for comparative ecophysiological studies, allowing the analysis of many mechanisms that are found in different oaks at different level (leaf or stem). The combination of several morphological and physiological attributes defines the existence of different functional types within the genus, which are characteristic of specific phytoclimates.
From a landscape perspective, oak forests and woodlands are threatened by many factors that can compromise their future: a limited regeneration, massive decline processes, mostly triggered by adverse climatic events or the competence with other broad-leaved trees and conifer species. The knowledge of all these facts can allow for a better management of the oak forests in the future.
Автор: Alexander W. Evans Название: A Revision of the Genus Acromastigum ISBN: 9401522588 ISBN-13(EAN): 9789401522588 Издательство: Springer Рейтинг: Цена: 81050.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: The writer's genusAcromastigum( I 0) illustrates terminal branching from both lateral and ventral segments and is the only genus of the Hepaticae with which the latter type of branching has been associated. The branches arising in this exceptional manner are flagelliform in character, and each shows at the base a narrow and incomplete underleaf. This represents the part of the segment that was not involved in the formation of the branch. In the writer's discussion of branching in the leafy Hepaticae (II, p. 23), terminal branching from ventral segments is definitely distinguished as the "Acromastigztm" type, and its distinctive features are pointed out. In the genus Bazzania, or M astigobryum as it is often called, the ventral flagelliform branches are intercalary in origin and arise in the axils of underleaves. Except for this important difference the genera Acromastigum and Bazzania have much in common, and the only species of Acromastigum which has so far been recognized was origi- nally referred, with some doubt, to the genus M astigobryum. This species, which is now known as A. integrifolium (Aust.) Evans, is apparently confined to Hawaii.
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