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 . ibers (SF), tracheae (T), and medullary rays(MR). B, transverse section of the root of Apocynum androssemifoliumshowing in addition groups of stone cells (St) in the cortex. Literature.—Holm, Mercks Report, 1910, p. 277; Power, Soc, 1909, p. 734. Strophanthus.—The ripe seeds of Strophanthus Kombe (), a twining shrub found in Zambesi and other parts of 544 SCIENTIFIC AND APPLIED PHARM
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 . ibers (SF), tracheae (T), and medullary rays(MR). B, transverse section of the root of Apocynum androssemifoliumshowing in addition groups of stone cells (St) in the cortex. Literature.—Holm, Mercks Report, 1910, p. 277; Power, Soc, 1909, p. 734. Strophanthus.—The ripe seeds of Strophanthus Kombe (), a twining shrub found in Zambesi and other parts of 544 SCIENTIFIC AND APPLIED PHARMACOGNOSY eastern Africa. The plumose awns at the summit of the seeds areusually removed before exportation (Fig. 233). Description.—Hemi-anatropous, oblong-lanceolate or spatulate,acute or acuminate, unevenly flattened and in transverse sectiondeltoid or plano-convex, 8 to 15 mm. in length, 3 to 5 mm. in breadth,1 to mm. in thickness; externally yellowish-green, covered withlong hairs giving a silky appearance to the seed, the raphe extendingas a distinct ridge from the hilum about half the length of the seed;fracture short; internally whitish, endosperm about mm. in. Fig. 233.—A dehiscent follicle of strophanthus showing plumose seeds. thickness, embryo 6 to 12 mm. in length and 1 to 2 mm. in breadth,cotyledons plano-convex, about 1 mm. in breadth, hypocotyl conical,2 mm. in length; inodorous except when broken; taste very bitter. When treated with 90 per cent sulphuric acid the endosperm, inabout 65 per cent of the seeds, becomes green, turning to brownish-green and not reddish; the cotyledons become red or purple andfinally green, in some instances. Inner Structure.—(Fig. 234.) Outer epidermal layer havingnumerous, non-glandular hairs, which are from to length, usually more or less bent, thin-walled and slightly lignifled,thickened and porous at the base; an inner layer of somewhat col- STROPHANTHUS 545 lapsed cells and which are more or l
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
