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. 11.—Leaf and a portion of rhizome of Dryopteris marginalis, the upperpinnae (divisions), showing the sori near the margins^ ASPIDIUM 31 extends north to Prince Edwards Island. The rhizome is collectedin early autumn, the leaves cut off, leaving the lower portions orstipes attached to the rhizomes; the dead portions of the rhizomesand the chaff are removed. Usually the drug consists of the stipesonly, whi
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. 11.—Leaf and a portion of rhizome of Dryopteris marginalis, the upperpinnae (divisions), showing the sori near the margins^ ASPIDIUM 31 extends north to Prince Edwards Island. The rhizome is collectedin early autumn, the leaves cut off, leaving the lower portions orstipes attached to the rhizomes; the dead portions of the rhizomesand the chaff are removed. Usually the drug consists of the stipesonly, which are separated from the rhizome, the periderm beingremoved (Fig. 12). The drug is carefully dried and preserved andshould not be used after it loses its green color. Description.—Of horizontal or oblique growth, 5 to 15 cm. longand 1 to 25 cm. thick, mostly covered with nearly cylindrical slightlycurved stipe-remnants (Fig. 12), which are about 25 mm. long and. Fig. 12.—A, B, Dryopteris Filix mas, showing a decorticated stipe and pieceof rhizome (A), and rhizomes and stipes (B); C, probably the rhizome ofOsmunda Claytoniana, which is sometimes substituted for Aspidium. 5 to 10 mm. thick, between which is a dense mass of dark-brown,glossy, transparent and soft chaffy scales; internally spongy, palegreen, becoming brownish with age; in transverse section showing aninterrupted circle of about six (D. marginalis) or seven to nine ( mas) groups of fibro-vascular tissue, each of which is sur-rourded by an endodermal-like layer; odor slight, taste acrid,somewhat bitter and Structure.—See Fig. 13. 32 SCIENTIFIC AND APPLIED PHARMACOGNOSY Powder.—Light brown or light greenish-brown (Fig. 14); starchgrains numerous, ellipsoidal, ovoid, oblong and irregularly shaped,varying in length from to mm.; numerous oil globulesseen in chloral mounts; trachea? long and with scalariform and reticu-late thickenings, the cells
Size: 1685px × 1483px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
