. Elements of botany. Botany; Botany. STEMS. 43 tected buds are formed on the twigs to their very tips. In other shrubs — for example, in the sumach, the raspberry, and blackberry — the shoots continue to grow until their soft and partly matured tips are killed by the frost. Such a mode of growth is called indefinite annual growth, to distinguish it from the definite annual growth of most trees. 65. Trees, Shrubs, and Herbs. — Plants of the largest size, with a main trunk of a woody structure, are called trees. Shrubs differ from trees in their smaller size, and gen- erally in their more forki
. Elements of botany. Botany; Botany. STEMS. 43 tected buds are formed on the twigs to their very tips. In other shrubs — for example, in the sumach, the raspberry, and blackberry — the shoots continue to grow until their soft and partly matured tips are killed by the frost. Such a mode of growth is called indefinite annual growth, to distinguish it from the definite annual growth of most trees. 65. Trees, Shrubs, and Herbs. — Plants of the largest size, with a main trunk of a woody structure, are called trees. Shrubs differ from trees in their smaller size, and gen- erally in their more forking and divided stem. The witch-hazel, the dogwoods, and the alders, for instance, are most of them classed as shrubs for this reason, though in height some of them equal the smaller trees. Some of the smallest shrubby plants, like the blueberry, the wintergreen, and the trailing arbutus, are only a few inches in height, but are ranked as shrubs because their woody stems do not die quite to the ground in winter. Herbs are plants whose stems above ground die every winter. 66. Annual, Biennial, and Perennial Plants. — Annual plants are those which live but one year, iiiennials those which live two years or nearly so (see § 46). Some annual plants may be made to live over winter, flowering in their second summer. This is true of winter wheat and rye among cultivated Fia. 27. — A White-Oak Tree, with Trunk somewhat 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
Size: 1562px × 1600px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1896
