. Gray's school and field book of botany. Consisting of "Lessons in botany," and "Field, forest, and garden botany," bound in one volume. Botany; Botany. 138 VEGETABLE LIFE AND WORK. [SECTION 16. needle-shaped (rhapbides), as in stalks of Calla-Lily, Rhubarb, or Pour- o'clock, they are usually packed in sheaf-like bundles. (Fig. 465, 466.) § 3. ANATOMY OF ROOTS AND STEMS. 423. This is so nearly the same that an account of the internal structure of stems may serve for the root also. â i i. * 424 At the beginning, either in the embryo or in an incipient shoot from a bud, the
. Gray's school and field book of botany. Consisting of "Lessons in botany," and "Field, forest, and garden botany," bound in one volume. Botany; Botany. 138 VEGETABLE LIFE AND WORK. [SECTION 16. needle-shaped (rhapbides), as in stalks of Calla-Lily, Rhubarb, or Pour- o'clock, they are usually packed in sheaf-like bundles. (Fig. 465, 466.) § 3. ANATOMY OF ROOTS AND STEMS. 423. This is so nearly the same that an account of the internal structure of stems may serve for the root also. â i i. * 424 At the beginning, either in the embryo or in an incipient shoot from a bud, the whole stem is of tender cellular tissue or parenchyma. But wood (consisting of wood-cells and ducts or vessels) begins to be formed in the earUest growth; and is from the first arranged in two ways, makin- two general kinds of wood. The difference is obvious even in herbs,°but is more conspicuous m the enduring stems of shrubs and 425 On one or the other of these two types the stems of all phaner&- gamous plants are constructed. In one, the wood is made up of separate threads, scattered here and there throughout the whole diameter of the stem In the other, the wood is all collected to form a layer (in a shoe across the stem appearing as a ring) between a central cellular part which has none in it, the Pith, and an outer cellular part, the Bark. 426. An Asparagus-shoot and a Corn-stalk for herbs, and a rattan for a woody kind, represent the first kind. To it belong all plants with monocotyledonous em- bryo (40). A Bean-stalk and the stem of any com- ^.?i;/^y.^M mon shrub or tree rep- i?4V;isisilfin!lH resent the second; and. 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 Gray, Asa, 1810-1888; Gray, Asa, 1810-1888. Elements of botany for beginners and for schools; Gray, Asa, 1810-1888. Field, fores
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
