. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. FALL OF THE LEAF. 361 detachment a small portion of the stalk remains on the branch. This is the case in the so-called Syringa, or Mock Orange (Philadelphus), where the scale-like part which is left has to protect the bud situated just above the leaf-stalk. In some trees and shrubs defoliation is very rapid, in others only gradual. In the Japanese Maidenhair Tree (Ginkgo biloba), the formation of the separation-layer and the detachment of the leaves is completed in a few days; in hornbeams and oaks t
. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. FALL OF THE LEAF. 361 detachment a small portion of the stalk remains on the branch. This is the case in the so-called Syringa, or Mock Orange (Philadelphus), where the scale-like part which is left has to protect the bud situated just above the leaf-stalk. In some trees and shrubs defoliation is very rapid, in others only gradual. In the Japanese Maidenhair Tree (Ginkgo biloba), the formation of the separation-layer and the detachment of the leaves is completed in a few days; in hornbeams and oaks the stripping of the foliage continues for weeks, and frequently only a portion. Kg. 93.—Leaf-fall of the Horse-chestnut (JEsculus Hippocastanum). of the dead leaves is thrown off in the autumn, the remainder not until the close of the winter. It is also worthy of remark that in some trees the leaf-fall begins at the end of the branches and gradually proceeds towards the base, while in others the contrary is the case. In ashes, beeches, hazels, and hornbeams, the apices of the branches are leafless when the lower parts still bear firmly-fixed foliage; in limes, willows, poplars, and pear-trees, on the other hand, the lower portions of the branches are seen to lose their leaves early in the autumn, the denudation gradually extending upwards; on the extreme ends of the branches some leaves, as a rule, obstinately remain for a long time, until they also are at length whirled away by the first Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kerner von Marilaun, Anton, 1831-1898; Oliver, F. W. (Francis Wall), 1864-1951; Busk, Marian (Balfour) Lady, 1861-1941; Macdonald, Mary Frances (Ewart); Kerner von Marilaun, Anton, 1831-1898. Pflanzenleben. English. New York, H. Holt and Company
Size: 1773px × 1409px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
