The elements of botany for The elements of botany for beginners and for schools elementsofbotany00gray Year: 1887 SECTION 2.] A PATTERN PLANT. 11 Section TI. FLAX AS A PATTERN PLANT. 8. Growth from the Seed. Phanerogamous plants grow from seed, and their flowers are destined to the production of seeds. A seed has a rudimentary plant ready formed in it,—sometimes with the two most essential parts, i. e. stem and leaf, plainly discernible; sometimes with no obvious distinction of organs until germination begins. This incipient plant is called an Embryo. 9. In this section the Flax-plant is take
![The elements of botany for The elements of botany for beginners and for schools elementsofbotany00gray Year: 1887 SECTION 2.] A PATTERN PLANT. 11 Section TI. FLAX AS A PATTERN PLANT. 8. Growth from the Seed. Phanerogamous plants grow from seed, and their flowers are destined to the production of seeds. A seed has a rudimentary plant ready formed in it,—sometimes with the two most essential parts, i. e. stem and leaf, plainly discernible; sometimes with no obvious distinction of organs until germination begins. This incipient plant is called an Embryo. 9. In this section the Flax-plant is take Stock Photo](https://c8.alamy.com/comp/RWNY9A/the-elements-of-botany-for-the-elements-of-botany-for-beginners-and-for-schools-elementsofbotany00gray-year-1887-section-2-a-pattern-plant-11-section-ti-flax-as-a-pattern-plant-8-growth-from-the-seed-phanerogamous-plants-grow-from-seed-and-their-flowers-are-destined-to-the-production-of-seeds-a-seed-has-a-rudimentary-plant-ready-formed-in-itsometimes-with-the-two-most-essential-parts-i-e-stem-and-leaf-plainly-discernible-sometimes-with-no-obvious-distinction-of-organs-until-germination-begins-this-incipient-plant-is-called-an-embryo-9-in-this-section-the-flax-plant-is-take-RWNY9A.jpg)
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The elements of botany for The elements of botany for beginners and for schools elementsofbotany00gray Year: 1887 SECTION 2.] A PATTERN PLANT. 11 Section TI. FLAX AS A PATTERN PLANT. 8. Growth from the Seed. Phanerogamous plants grow from seed, and their flowers are destined to the production of seeds. A seed has a rudimentary plant ready formed in it, —sometimes with the two most essential parts, i. e. stem and leaf, plainly discernible; sometimes with no obvious distinction of organs until germination begins. This incipient plant is called an Embryo. 9. In this section the Flax-plant is taken as a specimen, or type, and the development and history of common plants in general is illustrated by it. In flax-seed the embryo nearly fills the coats, but not quite. There is a small deposit of nourishment between the seed-coat and 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 ex- tremely 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. 10. Before the nature of these parts in the seed was altogether under- stood, technical names were given to them, which are still in use. These initial leaves were named Cotyledons. The initial stem on which they stand was called the Radicle. That was because it gives rise to the first root; but, as it is really the beginning of the stem, and because it is the stem that produces the root and not the root that produces the stem, it is better to name it the Caulicle. Recently it has been named Hj/porotj/le; which signifies something below the cotyledons, without pronouncing what its nature is. FlO. 1. Pod of Flax. 2. Section lengthwise, allowing two of the seeds; one whole, the other cut halt away, bringing contained embryo into view. 3. Similar section of a Hax