. Arboretum et fruticetum Britannicum; or, The trees and shrubs of Britain, native and foreign, hardy and half-hardy, pictorially and botanically delineated, and scientifically and popularly described; with their propagation, culture, management, and uses in the arts, in useful and ornamental plantations, and in landscape-gardening; preceded by a historical and geographical outline of the trees and shrubs of temperate climates throughout the world . on boggy soil. Theyare most probably formed by the extravasation of the sap, occasioned by thepuncture of some insect. The leaves are alternate, b
. Arboretum et fruticetum Britannicum; or, The trees and shrubs of Britain, native and foreign, hardy and half-hardy, pictorially and botanically delineated, and scientifically and popularly described; with their propagation, culture, management, and uses in the arts, in useful and ornamental plantations, and in landscape-gardening; preceded by a historical and geographical outline of the trees and shrubs of temperate climates throughout the world . on boggy soil. Theyare most probably formed by the extravasation of the sap, occasioned by thepuncture of some insect. The leaves are alternate, bright green, smooth,shining beneath, with the veins crossing like the meshes of a net; and thepetioles are k in. or more in length. The male catkins appear in autunm,on the ends of the twigs, but do not expand their flowers till the female cat-kins appear in s|)ring. On young trees, and on old trees in particular situ-ations, especially in damp boggy soil, the branches are erect; but in old trees,and in some young ones more than in others, they are pendidous, and hencethe variety of that name. The roots extend themselves horizontallv, anddivide into a great number of rootlets and hair-like fibres at their extremities;but they never throw up suckers. The rate of growth is considerable whenthe tree is young; averaging from 18in. to 2 ft. a year for the first 10 years;and young treoe cut down to the ground often make shoots 8 ft. or 10 ft. long. 1694. ARBORETUM AND FRUTICETUM. PART III. in one season. The duration of the birch is not great, the tree attainingmaturity, in good soils, in from forty to fifty years; but, according to Hartig,seldom lasting in health till it attains a hundred years. Geography, The common birch is a native of the colder regions of theold Continent; and also, as we think (under the form of j&.^opulifolia,and other kinds, treated by botanists as species), throughout great part ofNorth America. It is found in Asia, in Siberia, as far as the Altaic Moun-tain
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectplants, bookyear1854
