. Foundations of botany. (Fig. 34). 84. Indefinite Annual Growth. — In most of the foresttrees, and in the larger shrubs, the wood of young branchesis matured and fully developed during the I summer. Protected ^A buds are formed on ^^^ the twigs of these branches to their very tips. In other shrubs — for example, in the sumac, the raspberry, and blackberry — the shoots continue to grow until their soft and immature tips are killed by the frost. Such a mode of growth is called indefinite aniiual groivth^ to distinguish it from the definite annual growth of most trees. 85. Trees, Shrubs, and Her
. Foundations of botany. (Fig. 34). 84. Indefinite Annual Growth. — In most of the foresttrees, and in the larger shrubs, the wood of young branchesis matured and fully developed during the I summer. Protected ^A buds are formed on ^^^ the twigs of these branches to their very tips. In other shrubs — for example, in the sumac, the raspberry, and blackberry — the shoots continue to grow until their soft and immature tips are killed by the frost. Such a mode of growth is called indefinite aniiual groivth^ to distinguish it from the definite annual growth of most trees. 85. Trees, Shrubs, and Herbs. — Plantsof the largest size with a main trunk of awoody structure are called trees. Shrubsdiffer from trees in their smaller size, andgenerally in having several stems which proceed from theground or near it or in having much-forked stems. Thewitch-hazel, the dogwoods, and the alders, for instance,are most of them classed as shrubs for this reason, thoughin height some of them equal the smaller trees. Some of. Fig. 34. — Leaf-Bearingof Honev Locust.
Size: 1470px × 1699px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1901
