Volume 1
Trees : a handbook of forest-botany for the woodlands and the laboratory / by H. Marshall Ward.
- Wellcome Trust
- Date:
- 1904-09
Licence: In copyright
Credit: Trees : a handbook of forest-botany for the woodlands and the laboratory / by H. Marshall Ward. Source: Wellcome Collection.
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![in] The Ivy, for instance, has very few leaves in its bud, whereas in the Lettuce, &c. described as a type there may be over a hundred, while in some Pines there are between three hundred and four hundred. In the former of these instances the bud-leaves, moreover, are almost or entirely like those elsewhere on the shoot; but in such cases as the Pines and Firs, Walnut, Willow, Beech, Horse-chestnut and most trees the outer bud-scales are very unlike the young leaves inside the bud, or the older ones elsewhere, and may be very different in many ways. It is owing to these differences in the constitution, colour, size, position, &c. of buds that forest-botanists are enabled to compile diagnostic tables of the winter buds of trees and shrubs, very useful for determining species in the absence of the leaves. Confining our attention now chiefly to the trees and shrubs with which this book is concerned :— As regards size, the large buds of MJsculus, Fraxinus, Magnolia, Ficus, and Acer platanoides may be contrasted with the small ones of Cydonia, Ulmus, and Acer cam- pestre; those of the Oak, Beech, and Prunus Avium stand about midway as regards size. In shape most buds are more or less ovoid, but many modifications of the fundamental form are observable : for instance the long pointed buds of the Beech may be con- trasted with the stumpy pyramidal ones of the Ash; or the typically ovoid buds of the Oak, with the flattened appressed buds ot Willows, &c. As already stated, the usual position of the lateral buds is in the axils of the leaves: but in Iiobinia pseudacacia and in Platanus the lateral buds are apparently buried in the tissues of the base of the leaf-stalk, owing to the insertion of the latter enveloping the young bud as it forms. Rhus typhina, I hiladelphus, Gladrastis and Gleditschia give other examples of these immersed or sub-petiolar buds.](https://iiif.wellcomecollection.org/image/b2805717x_0001_0045.jp2/full/800%2C/0/default.jpg)
