. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. UNDERGROUND STEMS. 107. of the jlo>^]nj basrfi of the Imvcf^. But you will observe that at the bottom there is a rather flat, solid part upon whicli these coats or leaves are inserted, and ^vliicli must consequently be a stem. Sucli a stem as this, with its >..^«»i w «/i fleshy leaves, is caUed a huJh. If the ''^mMMiJmw leaves form coats, as in the Onion, tlie bulb is coaied or tnnicatefl;
. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. UNDERGROUND STEMS. 107. of the jlo>^]nj basrfi of the Imvcf^. But you will observe that at the bottom there is a rather flat, solid part upon whicli these coats or leaves are inserted, and ^vliicli must consequently be a stem. Sucli a stem as this, with its >..^«»i w «/i fleshy leaves, is caUed a huJh. If the ''^mMMiJmw leaves form coats, as in the Onion, tlie bulb is coaied or tnnicatefl; if they do 153. Tubers and bulbs, then, consist chiefly of masses of nourishing matter ; but there is this difleronce, that in the latter the nourishment is contained in tlie fleshy leaves themselves, whilst in the former it forms a mass more or less distinct from the buds. 154. The thickened mass at the base of the stem of our Indian Turnip (Fig. 94) is more like a tuber than a l)ulb in its construction. It is called a corm or solid bulb. The Crocus and Gladiolus of the gardens are other examples. The chief diflference between the corm and the ordinary bull) is in the relative space occupied by the stem or solid part. In the former it is very much greater than in the latter. The student should dissect specimens of Indian Turnip, Crocus, Tulip, Hyacinth, &c,, when these diflTerences will be readily apprehended. 155. In the axils of the leaves of the Tiger Lily are produced small, black, rounded bodies, which, on examination, prove to be of bulbous structure, They are, in fact, hulhlets^ and new plants may be grown from them. 156. Foliage-Leaves. These organs are usually more or less flat, and of a green colour. In some plants, Fifj. 139.—Bulb of a 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 wo
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