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 . rk brown; calcium oxalate usually in rosette aggre-gates from to mm. in diameter or in monoclinic prismsfrom to mm. in length occurring in parenchyma or incrystal fibers; bast fibers, mm. wide and very long; stone cells,from to mm. in diameter; oily drops and purplish-browntannin masses in parenchyma. Starch grains mostly single, or 2-to 4-compound, the individual gra
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 . rk brown; calcium oxalate usually in rosette aggre-gates from to mm. in diameter or in monoclinic prismsfrom to mm. in length occurring in parenchyma or incrystal fibers; bast fibers, mm. wide and very long; stone cells,from to mm. in diameter; oily drops and purplish-browntannin masses in parenchyma. Starch grains mostly single, or 2-to 4-compound, the individual grains from to mm. indiameter, occasionally with a central cleft. J. cinerea is distinguishedfrom J. alba and J. nigra in that both of the latter possess numerouscrystal fibers containing prismatic or rhombohedral crystals. has also in the medullary rays rosette aggregates of calciumoxalate. J. regia appears more nearly to resemble J. cinerea. Constituents.—It contains about 7 per cent of a yellow, crys-talline acrid principle which is colored purple with alkalies; 2 to JUGLANS 161 per cent of a crystalline resin; volatile oil, tannin, sugar, and afixed Fig. 70.—Juglans. A, transverse section showing cork (K); parenchyma cells (P);parenchyma cells rilled with tannin (Tc); rosette aggregates and monclinicprisms of calcium oxalate (Ca); stone cells (St); sieve (L); bast fibers (Bf);starch grains (S); medullary rays (M). B, fragment showing parenchymacells (P), and rosette aggregates of calcium oxalate (Ca). C, tangentialsection showing medullary rays (M), sieve (L). D, bast fiber in longitudinalview. E, fragment in longitudinal view showing 4-sided calcium oxalatecrystals (Ca) in cells forming a crystal fiber (Cf) and adjoining 2 bast , characteristic stone cells (St).—Drawing by Hogstad. Adulterants.—The stem bark of Juglans cinerea is sometimesmixed with the drug and is distinguished by the outer surface pos-sessing occasional grayish
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
