. Class-book of botany: being outlines of the structure, physiology and classification of plants; with a flora of the United States and Canada. Botany; Plants; Plants. 61, Corm of Crocus, with new ones forming above; 62, Vertical section of the same ; 63, Pac- tion of bulb of Hyacinth with terminal scape and axillary bulblet; 64, Section of bulb of Oxalia viojacea, with axillary scapes. 194. The tuber, corm and bulb are analogous forms approaching by degrees to the character of the bud, which consists of a little axis bearing a covering of scales. In the tuber the axis is excessively developed


. Class-book of botany: being outlines of the structure, physiology and classification of plants; with a flora of the United States and Canada. Botany; Plants; Plants. 61, Corm of Crocus, with new ones forming above; 62, Vertical section of the same ; 63, Pac- tion of bulb of Hyacinth with terminal scape and axillary bulblet; 64, Section of bulb of Oxalia viojacea, with axillary scapes. 194. The tuber, corm and bulb are analogous forms approaching by degrees to the character of the bud, which consists of a little axis bearing a covering of scales. In the tuber the axis is excessively developed while the scales are reduced to mere linear points. In the corm the analogy is far more evident, for the axis is less excessive and the scales more manifest, and lastly in the bulb the analogy is complete, or overdone, the scales often becoming excessive. CHAPTER VI. THE LEAF-BUD. 195. It is but a step from the study of the bulb to that of the leaf-bud. Buds are of two kinds in respect to their contents; the leaf-bud containing the rudiments of a leafy stem or branch, the flower- bud containing the same elements transformed into the nascent organs of a flower for the purpose of reproduction. 196. The leaf-bud consists of a brief, cone- shaped axis with a tender growing point, bearing a protecting covering of imbricated scales and incip- ient leaves. 65. Branch of pear tree. The terminal bud a, having been de- stroyed, an axillary bud supplied its place, and formed the axis 6. c, Thickened branch with flower-buds, d, branch with leaf-bud*. 66. t, section of terminal bud; I, of axillary 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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Keywords: ., bookcentury1800, booksubjectbotany, booksubjectplants, bookyear18