. The botany of crop plants : a text and reference book. Botany, Economic. LILIACEjE 233 sometimes borne in the axils of the leaves, and these may also develop into flower shoots. Leaf.—The first foliage leaf emerges from a slit in the cotyledon. All leaves are very thick and fleshy, and over- lapping. There is no petiole. The oldest leaves are on the. Fig. 90.—A, base of stem of common onion (Allium cepa) showing hollow leaves cut across; B, cross-section of hollow stem of same: C, base of stem of leek (Allium porrum) showing flattened solid leaves; D, cross-section of solid stem of same. out
. The botany of crop plants : a text and reference book. Botany, Economic. LILIACEjE 233 sometimes borne in the axils of the leaves, and these may also develop into flower shoots. Leaf.—The first foliage leaf emerges from a slit in the cotyledon. All leaves are very thick and fleshy, and over- lapping. There is no petiole. The oldest leaves are on the. Fig. 90.—A, base of stem of common onion (Allium cepa) showing hollow leaves cut across; B, cross-section of hollow stem of same: C, base of stem of leek (Allium porrum) showing flattened solid leaves; D, cross-section of solid stem of same. outside of the bulb, while the younger appear toward the inside. In a longitudinal section of the bulb, it will be noted that these younger leaves, coming from within, are higher on the compressed stem than the older (Fig. 14). The edible portion of the common onion, and of some other. 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 Robbins, Wilfred William, 1884-1952. Philadelphia : P. Blakiston's Son
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
