. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . the extraor-dinary differences in their inflorescence and fruit being the result ofhybridization and selection extending through centuries. These dif-ferences are especially marked, because some of the varieties have beendeveloped for grain, others for brush, and still others for sugar; whereasin the case of other cereals the production of grain has been chiefly con-sidered. 9 8 GR/ilN. Broom corn {Andropogon Sorghum var. Urhnicus Kocrn.), one ofthe most important variet
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . the extraor-dinary differences in their inflorescence and fruit being the result ofhybridization and selection extending through centuries. These dif-ferences are especially marked, because some of the varieties have beendeveloped for grain, others for brush, and still others for sugar; whereasin the case of other cereals the production of grain has been chiefly con-sidered. 9 8 GR/ilN. Broom corn {Andropogon Sorghum var. Urhnicus Kocrn.), one ofthe most important varieties, is grown in large quantities in Illinois,Kansas, Nebraska, and some other states of the United States, and toa much lesser extent in Spain, Italy, and other parts of Europe. Al-though the grain is not fully ripe when the brush is in its best condition,still it is utiHzed to some extent as food for cattle and poultr), and some-times is mixed with wheat bran as an adulterant. A fertile spikelct (Fig. 66) and one or two staminate or rudimentaryspikelets (r) are borne at each joint of the panicle. The fertile FiG. 66. Broom Com {Andropogon Sorghum var. technicus). Fruit with chafT. r twostaminate spikelets; ^i lower empty glume; g^ upper empty glume; g^ glume of rudi-mentary flower; gf flowering glume with awn; p palet; c car^^opsis or fruit. X4. (WlNTON.) let consists of two shining, thick, empty glumes {gi and ^^2) and threemembranous, hairy envelopes, constituting the glume (,?/) and smallpalet {p) of the perfect flower, and the glume (^3) of a rudimentar)- geniculate upwardly barbed awn, 5-7 mm. long, is borne on the glumeof the perfect flower; but this awn, being readily detached by thresh-ing, is seldom found in the grain on the market. The grain or cary-opsis is about 5 mm. long and from 2-3 mm. wide, tapering to ablunt point at both ends. It varies in color from yellow-brown tored-brown. HISTOLOGY. Both Empty Glumes (Fig. 66, ^1 and g-i) are from 4 to
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectplantanatomy
