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 . End. Fig. 227.—Ruellia ciliosa, the rhizome and roots of which are a common adul-terant of spigelia. A, transverse section of a secondary root: C, corticalparenchyma with one cystolith and a number of stone cells with very thickwalls and radiating simple pores: End, endodermis. B, longitudinal sectionof the same root, showing a single cell with an elongated cystolith, the en-crustation being of calcium carbon
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 . End. Fig. 227.—Ruellia ciliosa, the rhizome and roots of which are a common adul-terant of spigelia. A, transverse section of a secondary root: C, corticalparenchyma with one cystolith and a number of stone cells with very thickwalls and radiating simple pores: End, endodermis. B, longitudinal sectionof the same root, showing a single cell with an elongated cystolith, the en-crustation being of calcium carbonate.—After Holm. The histology of the rhizome of Ruellia is as follows: epidermalcells, tangentially elongated, the outer walls being much thickened;outer cortical layer composed of parenchyma cells, having collen-chymatous thickenings of the wall, and cystolith-containing cells;inner cortical zone made up of thin-walled parenchyma, leptome andsclereids or strongly lignified, elongated stone cells having thick,porous and lamellated walls; endodermis distinct; xylem composedof a compact zone of porous tracheae, and wood fibers; pith consisting 532 SCIENTIFIC AND APPLIED PHARMAC
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
