. Botany for agricultural students . Botany. 22 FLOWERS almost completely enclose the flowers of the spikelet. In thresh- ing most varieties of Oats, only the glumes are removed, the kernel still remaining enclosed by the lemma and palea, which form the covering known as the hull of the grain. A grain of Oats, therefore consists of the kernel and its hull; and the quality of Oats depends much upon the proportion of hull to kernel. As indicated in Figure 18, the lower flower grows. Fig. 20. â Spikelet of Wheat much enlarged and shown with the bracts spread apart, so that parts of the flower may
. Botany for agricultural students . Botany. 22 FLOWERS almost completely enclose the flowers of the spikelet. In thresh- ing most varieties of Oats, only the glumes are removed, the kernel still remaining enclosed by the lemma and palea, which form the covering known as the hull of the grain. A grain of Oats, therefore consists of the kernel and its hull; and the quality of Oats depends much upon the proportion of hull to kernel. As indicated in Figure 18, the lower flower grows. Fig. 20. â Spikelet of Wheat much enlarged and shown with the bracts spread apart, so that parts of the flower may be seen. The flowers are num- bered and the parts of one flower are labelled, e, outer glumes; /, lemma; â pa, palea; p, pistil; s, stamens; I, lodicule; a, awn or beard; r, rachis. more rapidly than the others and forms the larger kernel to which the smaller one sometimes remains attached after threshing. Wheat Flowers. â In Wheat the head, usually called spike, consists of many spikelets arranged in two rows along the zig-zag axis of the head. (Fig. 19.) This zig-zag axis is the rachis of the spike. The spikelets are not borne at the ends of branches. 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 Martin, John N. (John Nathan), b. 1875. New York : John Wiley & Sons, Inc.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
