. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. D. Fig. 17. A. Fruit of the Cocklebur (Xanthium canadense), causes mechanical in- juries to hogs when eaten by them. B. Sandbur (Cenchrus tfibuloides), C. Burdock (Arctium major). D. Boot Jack (Bidens frondosa). E. One of the Borages iCynoghssum). F. Carrot (Daucus Carota). branches of Greasewood {Sarcohatus vermiculaius) easily penetrate the skin and sometimes induce pus infection. The bristles and spines of the rose and stiff bract
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. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. D. Fig. 17. A. Fruit of the Cocklebur (Xanthium canadense), causes mechanical in- juries to hogs when eaten by them. B. Sandbur (Cenchrus tfibuloides), C. Burdock (Arctium major). D. Boot Jack (Bidens frondosa). E. One of the Borages iCynoghssum). F. Carrot (Daucus Carota). branches of Greasewood {Sarcohatus vermiculaius) easily penetrate the skin and sometimes induce pus infection. The bristles and spines of the rose and stiff bracts of the Russian Thistle may be the cause of injury to animals and men. The small, barbed trichomes of the calyx of Crimson Clover (Trifolium incarnatum), according to Prof. Coville, produce phytobezoars similar to those commonly produced by hair. Dr. Trelease has described similar bezoars from the barbed trichomes and spines of cacti. Millet and barley awns are known to produce similar balls in horses as well as in cattle. Corn stalks, when eaten with an insufficient amount of water, produce impaction. This has, however, been attributed to other causes also. Bloat is known to follow the use of such forage as white and red clover, alfalfa, pigweed and many other plants con- sumed under the same conditions.. 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 work.. Pammel, L. H. (Louis Hermann), 1862-1931. Cedar Rapids, Ia. , The Torch Press