. Botany, an elementary text for schools. Botany. 152. The tborus are in the axils of leaves. it stands for. For example, the foliage in Fig. 151 represents green expanded petioles. These leaf-like mem- bers bear buds (which produce branches) in their axils, and they have the arrangement or phyllo- taxy of leaves; therefore they are considered to be true leaf parts. But they stand edgewise as if they might be petioles; sometimes they bear leaf-blades; other aca- cias have compound expanded leaves; there are intermediate forms or grada- tions between different acacias; j'oung seedlings sometime
. Botany, an elementary text for schools. Botany. 152. The tborus are in the axils of leaves. it stands for. For example, the foliage in Fig. 151 represents green expanded petioles. These leaf-like mem- bers bear buds (which produce branches) in their axils, and they have the arrangement or phyllo- taxy of leaves; therefore they are considered to be true leaf parts. But they stand edgewise as if they might be petioles; sometimes they bear leaf-blades; other aca- cias have compound expanded leaves; there are intermediate forms or grada- tions between different acacias; j'oung seedlings sometimes show intermediate forms. From all the evidence, it is now understood that the foliage of the simple- leaf acacias represents leaf-like petioles. Such petioles are known as phyllodia (singular, phyllodium). 215. Thorns and strong spines are usually branches. The spines of hawthorns or thorn-apples are examples: they are borne in the axils of leaves as branches are (Fig. 152); hawthorns usually bear two or more buds in each axil (Fig. 153), and one or two of these buds often grow the following year into normal leafy branches (Fig. 154); sometimes the thorn itself bears leaves (Fig. 155). The thorns of wilding pears, apples, and plums are short, hardened branches. In well-cultivated trees there is sufficient vigor . '' 155. The thorn to push the mam branch into longer and may bear 153. Two or more buds are borne in the 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 Bailey, L. H. (Liberty Hyde), 1858-1954. New York Macmillan
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