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 . r.—(Fig. 74.) Dark green; non-glandular hairs, 1-celled,more or less curved, with numerous slight projections, and some-times with cystoliths of calcium carbonate; glandular hairs twokinds—either with short unicellular or multicellular stalks—and8- to 16-celled glandular heads; calcium oxalate, in rosette aggre-gates from to mm. in diameter; numerous oil globulesand resin fragments; few nearly sph
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 . r.—(Fig. 74.) Dark green; non-glandular hairs, 1-celled,more or less curved, with numerous slight projections, and some-times with cystoliths of calcium carbonate; glandular hairs twokinds—either with short unicellular or multicellular stalks—and8- to 16-celled glandular heads; calcium oxalate, in rosette aggre-gates from to mm. in diameter; numerous oil globulesand resin fragments; few nearly spheroidal pollen grains mm. in diameter, with numerous centrifugal projections. CANNABIS 175 among club-shaped unicellular hairs of style; tracheae spiral or withsimple or bordered pores; sclerenchymatous fibers long, thin-walled,non-lignified, and with few simple pores; laticiferous vessels withreddish-brown contents. When mature seeds are present, palisade-like stone cells occur, which are very thick-walled, and have a smalllumen. The drug is said to lose its activity when in the powdered condi-tion. The same statement is true in regard to the powdered Fig. 74.—Cannabis indica: Cy, non-glandular hairs containing calcium carbonatein the form of cystolith; G, multicellular glandular hairs of the bracts; Gs,hairs of the bracts; Gs, multicellular heads of glandular hairs; S, papillae ofstigma; B, tracheae with bored pores, present in stem fragments; T, tracheaewith annular markings; P, pollen grains; Ca, rosette aggregates of calciumoxalate; N, thick-walled non-glandular hair with numerous papillae on thesurface. Constituents.—From 15 to 20 per cent of a resin (called cannabin),consisting of a number of substances, one of which, cannabinol (can-nabindon), occurs as a red, oily substance and is said to possess theintoxicating properties of the drug. The drug also contains cent of a yellowish volatile oil, which consists chiefly of a ses-quite
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
