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 . Fig. 90.—Transverse section of a part of the rhizome of hydrastis near thecambium: P, parenchyma; S, sieve; C, cambium; T, tracheae; F, woodfibers. Roots 4 to 7 cm. in length, to mm. in diameter; inter-nally bright yellow, wood somewhat Structure.—See Fig. 90. HYDRASTIS 211 Powder.—(Fig. 91.) Bright yellow to brownish-yellow; starchgrains numerous, from to mm. in diamete
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 . Fig. 90.—Transverse section of a part of the rhizome of hydrastis near thecambium: P, parenchyma; S, sieve; C, cambium; T, tracheae; F, woodfibers. Roots 4 to 7 cm. in length, to mm. in diameter; inter-nally bright yellow, wood somewhat Structure.—See Fig. 90. HYDRASTIS 211 Powder.—(Fig. 91.) Bright yellow to brownish-yellow; starchgrains numerous, from to mm. in diameter, being mostlysingle, nearly spheroidal, and either free or in the parenchyma cells;fragments with the tissues of the fibrovascular bundles mostlyassociated with starch-bearing parenchyma; tracheae, with simpleand bordered pores and occasionally spiral thickenings, and asso-ciated with short sclerenchymatous fibers possessing thin wallswith simple pores; occasional fragments of tabular cork cells withreddish-brown m ft* Fig. 91.—Hydrastis: P, parenchyma; S, parenchyma containing starch; T,tracheae with annular and reticulate thickenings of the walls; F, tracheidswith simple pores; C, cambium; K, cork; B, parenchyma cells showing theseparation of acicular crystals of one of the alkaloids on the addition ofconcentrated sulphuric acid; H, prisms of one of the alkaloids which sepa-rate on the addition of concentrated sulphuric acid to a powder previouslymoistened with water. Constituents.—Two alkaloids—one, hydrastine, occurring tothe extent of 2 to 3 per cent, and forming colorless, tasteless 4-sidedprisms, although the salts are pale yellow and bitter; the other,berberine, occurring to the extent of 3 to 4 per cent in the form ofyellow rods (Fig. 92), which are bitter and readily form compounds 212 SCIENTIFIC AND APPLIED PHARMACOGNOSY
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
