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The Elements of Botany
Asa Gray
The Elements of Botany
Asa Gray
Book Excerptd the embryo: this may for the present be left out of the account. This embryo consists of a pair of leaves, pressed together face to face, and attached to an extremely short stem. (Fig. 2-4.) In this rudimentary condition the real nature of the parts is not at once apparent; but when the seed grows they promptly reveal their character, --as the accompanying figures (Fig. 5-7) show.[Illustration: Fig. 1. Pod of Flax. 2. Section lengthwise, showing two of the seeds; one whole, the other cut half away, bringing contained embryo into view. 3. Similar section of a flax-seed more magnified and divided flatwise; turned round, so that the stem-end (caulicle) of the embryo is below: the whole broad upper part is the inner face of one of the cotyledons; the minute nick at its base is the plumule. 4. Similar section through a seed turned edgewise, showing the thickness of the cotyledons, and the minute plumule between them, i. e. the minute bud on the upper end of the caulicle.]10. Before the nature of
Media | Książki Paperback Book (Książka z miękką okładką i klejonym grzbietem) |
Wydane | 28 lutego 2021 |
ISBN13 | 9798690683016 |
Wydawcy | Independently Published |
Strony | 272 |
Wymiary | 152 × 229 × 14 mm · 367 g |
Język | English |
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