. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. 24 HOW PLANTS GROW YEAR AFTER YEAR. of the preceding one. There are old trees even, which consist of a simple, un- branched stem. Palm-trees, such as our Southern Palmetto (Fig. 79) are of thid kind. But more commonly, as stems grow they multiply them- selves by forming 53. Branches, or ude-shoots. These are formed both by roots and by stems. Roots generally branch much soon
. Botany for young people and common schools. How plants grow, a simple introduction to structural botany. With a popular flora, or an arrangement and description of common plants, both wild and cultivated. Botany; Botany. 24 HOW PLANTS GROW YEAR AFTER YEAR. of the preceding one. There are old trees even, which consist of a simple, un- branched stem. Palm-trees, such as our Southern Palmetto (Fig. 79) are of thid kind. But more commonly, as stems grow they multiply them- selves by forming 53. Branches, or ude-shoots. These are formed both by roots and by stems. Roots generally branch much sooner than stems do. See Fig. 4, 20, 30, &c. 54. Roots send off their branches from any part of the main root, or stai't from any part of a stem lying on or in the soil; and tliey have no particular arrangement. 55. But the branches of stems spring only from particular places, and are arranged on a regular plan. They arise from the Axil of a leaf and nowhere else, except in some few pe- culiar cases. The axil (from a Latin word meaning the armpit) of a leaf is the hoilow or angle, on the upper side, where the leaf is attached to the stem. As branches come only from the axils of leaves, and as leaves have a perfectly regular and uniform arrangement in each particular plant, the places where branches will appear are fixed beforehand by the places of the leaves, and they must follow their arrangement. In the axils, commonly one in each, branches first appear in the form of 56. Buds. A Bud is an undeveloped stem or branch. If large enough to have its parts distinguishable, these ai-e seen to be undeveloped or forming leaves; and large buds which are to stand over winter are generally covered with protect- ing scales, — a kind of dry, diminished leaves. 57. Terminal Bud. So the plumule or first shoot of the embryo (see Fig. 22, &c.) is a bud. But this first bud makes the main stem, and its growtli, week after week, or year after year, carries on the main stem. Palms (as Fig.
Size: 839px × 2978px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksubjectbotany, bookyear1858
