. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 236 POISONING. PRUNACE^ (plum FAMILY). *Prunus caroliniana.—The laurel cherry, or mock orange, is native in the south-eastern quarter of the United States, and is there often cultivated for hedges. The half-withered leaves and the seeds yield prussic acid, and are poisonous when eaten by animals. * Prunus serotina.—The wdld black cherry is a valuable forest tree which ranges throughout the eastern half of the United States. Cattle are killed by eating the partially withered leaves from branches thrown carelessly within their re
. Diseases of cattle, sheep, goats and swine. Veterinary medicine. 236 POISONING. PRUNACE^ (plum FAMILY). *Prunus caroliniana.—The laurel cherry, or mock orange, is native in the south-eastern quarter of the United States, and is there often cultivated for hedges. The half-withered leaves and the seeds yield prussic acid, and are poisonous when eaten by animals. * Prunus serotina.—The wdld black cherry is a valuable forest tree which ranges throughout the eastern half of the United States. Cattle are killed by eating the partially withered leaves from branches thrown carelessly within their reach or ignorantly offered as food. The leaves of various other wild and cultivated cherries are probably poisonous to cattle in the same way. VICIACE^ (pea family). Aragallus lambertii. — The Lambert, or stemless loco weed, is, next to the following species, the best-known representative of a large group of closely related plants w^hich are native to the western half of the United States, and are known as loco weeds on account of the peculiar excited • condition which they induce in animals that eat of their leaves. Horses and cattle are both affected, but the chief damage is done to horses. After being per- mitted to graze on any of these plants the animal acquires an un- natural appetite for them, and soon refuses all other kinds of food. It rapidly becomes unmanageable, shows brain symptoms, and finally dies from lack of proper nourishment. Astragalus mollissimus.—This, the woolly loco w^eed, is perhaps the best known of all the loco weeds. It is the species most abundant in Colorado, where from 1881 to 1885 nearly $200,000 was paid out in bounties in an attempt to exterminate it. The plant is still abundant in that State, and reports of the damage done by it continue Fig. 87.—Black cherry {Prunus serotina) one-third natural Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
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