Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . ally a yellowish-brown or brownish-black carbon-like sub-stance, termed phytomelane. For further discussion of this subject,with illustrations, consult Kraemers Applied and Economic Botany,pp. 258-261. Powder.—Very light brown; on boiling with water it emits adistinct aromatic, pepper-like odor, distinguishing it from bella-donna; inulin (Fig. 304), in parenchyma cells, mostly in the formof separate, irregula
Scientific and applied pharmacognosy intended for the use of students in pharmacy, as a hand book for pharmacists, and as a reference book for food and drug analysts and pharmacologists . ally a yellowish-brown or brownish-black carbon-like sub-stance, termed phytomelane. For further discussion of this subject,with illustrations, consult Kraemers Applied and Economic Botany,pp. 258-261. Powder.—Very light brown; on boiling with water it emits adistinct aromatic, pepper-like odor, distinguishing it from bella-donna; inulin (Fig. 304), in parenchyma cells, mostly in the formof separate, irregular, colorless granules, varying from to in diameter; fragments of yellowish-brown or reddish-brownresin masses; tracheae having narrow lumina and large ellipticalperforations, occasionally bordered pores; wood fibers very narrow,strongly lignified and marked by numerous simple pores; fragments INULA of cork rectangular or somewhat polygonal, and having relativelythin brownish-walls, the cells usually containing a granular cyto-plasm and a nucleus; small groups of narrow, elongated sclerenchy-matous fibers; fragments of resin canals with thin-walled Fig 304.—Elecampane (Inula Helenium): A, one of the smaller leaves near theinflorescence. B, under surface of the leaf. C, hairs of leaf. D, transversesection of petiole showing parenchyma (p), lignified bast fibers (6), sieve (s),tracheae (t), and somewhat thickened cells of wood (w). E, F, G, successivestages in the development of the intercellular or schizogenous oleo-resincanals of very young roots. H, sphere-crystals of inulin as seen in the rootafter treatment with alcohol. /, single sphere-crystal. Constituents.—Inulin from 35 to 45 per cent; from 1 to 2 percent of alantol, a crystalline or somewhat oily substance, consistingchiefly of alantolacton and small quantities of alantolic acid, alantol 692 SCIENTIFIC AND APPLIED PHARMACOGNOSY camphor and isoalantolacton; a bitter principle; mucil
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
