. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . eemembranous, 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-brow
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . eemembranous, 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 6 mm. long,equalling and closely enveloping the fruit. They \\\r\ in color fromyellow-brown to red-brown. The soft hairs, which nearly cover the outersurface, are loosely attached and most of them are removed during thethreshing and cleaning of the seed, leaving the ghimes smooth andshining. BROOM CORN. 99 I. The Outer Epidermis (Figs. 67 and 68, aep) consists of thick-walled sclerenchyma cells several times as long as broad, with wavy con-. FiG. 67. Fig. 68. Broom Corn. Transverse section of empty glume and outer layers of fruit. Spempty glume consists of aep outer epidermis, / fiber layer, p sirangy parenchyma ^vithg bundle, and iep inner epidermis with sto stoma; Fs pericarp consists of ep epicarp withc cuticle, hy hypoderm, mes starchy mesocarp, q cross cells and sch tube cells; N peri-sperm with 5 swollen inner walls; E endosperm, consists of al aleurone layer and thestarch cells with st starch grains and a proteid network. X i6o. (Winton.) Fig. 68. Broom Corn, aep outer epidermis and / fiber of an empty glume in surface 300. (Winton.) tour, interspersed here and there with isodiametric hair-scars, each ac-companied by a crescent-shaped cell with granular contents. The hairs,which are almost invariably detached in preparing the mount, if not incleaning the seed, are often mm.
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectplantanatomy
