. The American botanist and florist: including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union. Botany; Botany. 62 STRUCTURAL BOTANY. been known to perform long voyages without injury to their vitality. Squirrels laying up their winter stores in the earth ; birds migrating from clime to clime and from island to island, in like manner conspire to effect the same important end. Heview.—m. What is the seed ? Its two coverings. 173. The texture of th
. The American botanist and florist: including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union. Botany; Botany. 62 STRUCTURAL BOTANY. been known to perform long voyages without injury to their vitality. Squirrels laying up their winter stores in the earth ; birds migrating from clime to clime and from island to island, in like manner conspire to effect the same important end. Heview.—m. What is the seed ? Its two coverings. 173. The texture of the testa Its appendages. What is cotton ? 174. Distinguish coma from pappus. 173. What is the aril ? 17ti. Positions of the seed in the cell. When is a seed anatropons ?—Orthotro pous? etc. 177. Define hilum. When does a raphe exist? What is the micropyle ? 178 Constituents of an albuminous seed—Exalbuminous. 179. Varying proportions of albu men. Various texture. 180. Distinguish the three parts of the embryo. Where is the food for the embryo ? 181. Distinguish the Monocotyledonous Plants. 182. The Dicoty^ ledonous. 183. Position of the embryo in the seed of Violet ?—Of Pink ?—Hop ?—Shep- herd's Purse'—Arabis ? 185. Vitality of the seed. 186. Special arrangements for their dispersion. CHAPTER XIII. GERMINATION. 188. The recommencement of growth in the seed is called (fermination. It is the awakening of the embryo from its tor- por, and the beginning of development in its parts already formed, so as to become a plant like its Germiimiinn of the Bceclmut.—218, Cross-section, showinf; the folded cotyleilon?. 219, The radielo nly. 220. The ascending axis, above c, appears. 221, Tlie cotyledons expand into the primordial javes. 222, The first true leaves. 189. All the Stages of this interesting process may be conveniently observed, at any season, by an experiment. Let a few seeds, as of flax, cotton, wheat, pea, be enveloped in a lock of cotton resting upon w
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
