. alumni journal. Columbia University. College of Pharmacy; Pharmacology. C. U. C. p. ALUMNI JOURNAL 155 syriaca is known as milkweed or silk- weed. Its younger roots occur in small pieces 25 to 40 millimeters long and 7 to 14 millimeters wide. The older roots are cut in transverse pieces 6 to 18 milli- meters in thickness. The general ap- pearance is almost smooth; of a light buff to a slightly pinkish color. The older portions are marked with very fine, longitudinal striae, which are less numerous in the younger fragments. The transverse sections are marked with concentric depressed
. alumni journal. Columbia University. College of Pharmacy; Pharmacology. C. U. C. p. ALUMNI JOURNAL 155 syriaca is known as milkweed or silk- weed. Its younger roots occur in small pieces 25 to 40 millimeters long and 7 to 14 millimeters wide. The older roots are cut in transverse pieces 6 to 18 milli- meters in thickness. The general ap- pearance is almost smooth; of a light buff to a slightly pinkish color. The older portions are marked with very fine, longitudinal striae, which are less numerous in the younger fragments. The transverse sections are marked with concentric depressed layers and radiat- ing woody tissue. The bark separates. Asclepias decumbeos. H.—Starch. B.—Fibers. X.—Stone cells. C—Crystals. O.—Parenchyma. V.—Vessels. CU.—Cubical Crystals. G.—Longitudinal Parenchyma. easily from the wood. The root is eas- ily broken, and shows a clean but un- even fracture. Asclepias syriaca has a pleasant odor and sweetish taste.' Asclepias decumbens, or butterfly- weed, occurs in large pieces 100 to 175 millimeters in length and 25 to 50 milli- meters in width, also seen in transverse sections. The color of Asclepias de- cumbens is a dirty yellow to brown. The general appearance is shriveled, due to very deep longitudinal striations and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Columbia University. College of Pharmacy. Alumni Association. New York : Alumni Association, New York College of Pharmacy, Columbia University
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Keywords: ., bookcentury1900, bookcol, bookdecade1910, booksubjectpharmacology
