. Botany of the living plant. Botany; Plants. MECHANICAL CONSTRUCTION OF PLANT-BODY 183 spars of racing yachts, in which internal ties of metal have been used to meet that risk. In the haulms of Grasses, and conspicuously in the large Bamboos, hard woody septa at the level of the leaf-insertions serve the same purpose (Fig. 114). With- out these it would not be possible for hollow stems to uphold the huge head of leaves, sometimes one hundred feet above ground, against all winds, as the Giant Bamboos are able to do. The hollow cylindrical stem of a Bamboo, or of a straw of wheat, may be imagin
. Botany of the living plant. Botany; Plants. MECHANICAL CONSTRUCTION OF PLANT-BODY 183 spars of racing yachts, in which internal ties of metal have been used to meet that risk. In the haulms of Grasses, and conspicuously in the large Bamboos, hard woody septa at the level of the leaf-insertions serve the same purpose (Fig. 114). With- out these it would not be possible for hollow stems to uphold the huge head of leaves, sometimes one hundred feet above ground, against all winds, as the Giant Bamboos are able to do. The hollow cylindrical stem of a Bamboo, or of a straw of wheat, may be imagined as corresponding to a series of crossed girders (Fig. 115), with the straps or flanges all fused laterally, so as to form a firm peripheral band. The effective material is placed as far as possible from the centre. The straps *being fused laterally, the connecting plate or web of the individual girders can be dispensed with, and the stem is accordingly hollow. But in many cases, and especially in young stems of Dicotyledons, the relation of the. Fig. 115. Diagram of crossed girders. Text. See. 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 Bower, F. O. (Frederick Orpen), 1855-1948; Wardlaw, C. W. (Claude Wilson), 1901-. London, Macmillan and Co. , ltd.
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Keywords: ., bookcentury1900, bookpublis, booksubjectbotany, booksubjectplants
