. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. Gormination of the Maple. 475, Samara ; section showing thn folded cotyledons at c 476—480, Progieesivo 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 4S2 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 gr
. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. Gormination of the Maple. 475, Samara ; section showing thn folded cotyledons at c 476—480, Progieesivo 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 4S2 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 BOW an embryo no longer, but a grow- ing plant descending by ite lower axis, ascending and expanding by its upper. 613. "What becomes of the cotyledons. The germination of the tulip-treo, oak, pea, squash, and other Dicotyledons may bo watched with equal advantage, and the cliicf difference observed among them will be in the disposal of the cotyledons. In general, these arise with the ascending axis, as in the maple and bean, snd act as the first pair of leaves; but some- times, when they are very thick, as in the poa buck-eye, oak (6—9), they remain as first containing the cotyledon ;'V, pilule™" P'^''^'^ ^'* "^^ coUum (§ 118), neither asccnd- radlolo; «, rootlets (adventitious). mg 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 : A. S. Barnes & Burr
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