. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. 122 OERMIKATIOV. bursting integument. A section of this seed would now show the folded embryo inipatient of 479 478 477 476 Germination of tlic Maple. 475, Samara; section showing thn folded cotyledons at c. 476—480, Progressive stages. 612. The PROCESS CONCLUDED. Soon the radicle has extended, and, pale in color, has hidden itself in the bosom of the
. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. 122 OERMIKATIOV. bursting integument. A section of this seed would now show the folded embryo inipatient of 479 478 477 476 Germination of tlic Maple. 475, Samara; section showing thn folded cotyledons at c. 476—480, Progressive stages. 612. The PROCESS CONCLUDED. Soon the radicle has extended, and, pale in color, has hidden itself in the bosom of the dark, damp earth. 481 482 Now the cotyledons, unfolding and grad- ually freed from the seed coats, display themselves at length as a pair of green leaves. Lastly the plumule appears in open air, a green bud, already showing a lengthening base, its first internode, and soon a pair of regular leaves, lobed as all maple leaves. The embryo is now an embryo no longer, but a grow- ing plant descending by its lower axis, ascending and expanding by its upper. 613. What bkcomes of the cotyledons. The germiaatioa of the tulip-tree, oak, pea, squash, and other Dicotyledons may be watched with equal advantage, and the chief difference observed among them will bo in the disposal of the cotyledons. In general, these arise with the ascending axis, as in the maple and bean, and act as the first pair of loaves; but some- times, when they are very thick, as in the pea, „ . . „,. ., , buck-eye. oak (6—9), they remain as first Germination of Wheat; o, the grain ........ n lo i V o\ -.^t i containing the cotyledon ; o, plumule; r, P'^ced With the collum (§ 118), neither ascend- radiole; «, rootlets (adventitious). ing nor 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 Wood, Alphonso, 1810-1881. New York;
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
