American journal of pharmacy . eter. The root proper is of from one-eighth tothree-eigliths inch in diameter at the upper part, is branched andtapering, of from two to five inches in length, and very much con-torted, with a projecting, keel-like ridge, running the entire length ofthe root and rootlets in a spiral form. It is both longitudinally andtransv^ersely wrinkled, breaks with a short fracture, and exhibits asomewhat porous, rather firmly adhering bark, which varies in thick-ness of from one-third to one-fifth of the thickness of the root. Theprojecting keel disappears upon being boiled
American journal of pharmacy . eter. The root proper is of from one-eighth tothree-eigliths inch in diameter at the upper part, is branched andtapering, of from two to five inches in length, and very much con-torted, with a projecting, keel-like ridge, running the entire length ofthe root and rootlets in a spiral form. It is both longitudinally andtransv^ersely wrinkled, breaks with a short fracture, and exhibits asomewhat porous, rather firmly adhering bark, which varies in thick-ness of from one-third to one-fifth of the thickness of the root. Theprojecting keel disappears upon being boiled with water, and reap-pears when the root is dried. The woody portion is from a light yel-low to almost a white color, and is in different places very irregular inshape, owing to a non-formation of portions of the woody root is capable of being reduced to fine powder with greaterease than the false variety, the dust being very sternutatory; whenchewed it produces a painful sensation in the throat and False Senega Root.—Transverse and longitadinal section to center The false senega, when cut transversely, exhibits an outer layer ofcells, rather irregular, very compact, thin and corky; the inner barkis about five or six times as thick, its cells are very regular and appearin distinct circles, varying in size; the outer circle is formed of verysmall, flattened cells; the second, broader layer, consists of oval cells,and is followed by a zone of smaller slightly flattened cells, and by aninner circle of cells, nearly similar to the preceding. A very thincambium layer separates the bark from the wood, which is rather .Am. Jour. Pliai m. \July, 1881. J False and True Senega. 323 compact, with slightly curved numerous medullary rays, composed ofsmall flat parenchyma cells; the woody cells are small, somewhat ovalshaped, intermixed with larger ducts, of the same shape, arranged inthree distinct circles. In longitudinal section, the corky layer of the bark
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Keywords: ., bookcentury1800, bookdecade183, booksubjectpharmacy, bookyear1835
