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 . bon-like slices, 8 to 16 cm. in length, 5 to 15 diameter, 2 to 10 mm. in thickness; externally, bark dark brown,more or less wrinkled; fracture fibrous, tough; internally light brown,characterized by alternating zones of collateral fibrovascular bun-dles and parenchyma formed by secondary cambiums; odor slight;taste acrid. Inner Structure.—See Kraemers Applied and Economic Bot-any, p. 318. Powder.—Dark
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 . bon-like slices, 8 to 16 cm. in length, 5 to 15 diameter, 2 to 10 mm. in thickness; externally, bark dark brown,more or less wrinkled; fracture fibrous, tough; internally light brown,characterized by alternating zones of collateral fibrovascular bun-dles and parenchyma formed by secondary cambiums; odor slight;taste acrid. Inner Structure.—See Kraemers Applied and Economic Bot-any, p. 318. Powder.—Dark yellow; sternutatory; fragments with longsclerenchymatous fibers and large scalariform tracheae; starchgrains to mm. in diameter; calcium oxalate in mm. in length or in sphenoid microcrystals. Constituents.—A bitter, acrid glucoside resembling saponin;a crystalline alkaloid phytolaccine, which is soluble in alcohol andsparingly soluble in water; sugars 10 per cent; starch 10 per cent; POKE WEED 199 phytolaccic acid; formic acid; potassium formate 2 per cent; cal-cium oxalate 6 per cent; and ash 13 per cent of which about one-half is potassium Fig. 85.—Poke weed (Phytolacca decandra): A, portion of shoot showing leavesand stem which has a large pith with bi-convex cavities resembling thepith of certain xerophytic Compositse, as Senecio praecox of Mexico; B,raceme showing fruits at the lower portion and flowers at the summit; C,transverse section of leaf showing upper epidermis (ue), palisade cells (p),raphides (r), spiral tracheae (»)., parenchyma (m) with large intercellularspaces, lower epidermis (le); D, stoma of lower surface of leaf; E, transversesection of fruit; F, longitudinal section of seed, the embryo being curved andthe endosperm containing starch. Phytolacca Fructus or Phytolacca Fruit occurs in agglutinatedmasses of a purplish-black color, and consists of the compound 200 SCIENTIFIC AND APPLIED PHARMACOGNOSY berries, which
Size: 1560px × 1602px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
