This article is from the Basic Health Care FAQ, posted to rec.pets.cats newsgroup. Maintained by Cindy Tittle Moore with numerous contributions by others.
* Vomiting and diarrhea in some cases: Delphinium; daffodil; castor bean; Indian turnip; skunk cabbage; poke weed; bittersweet; ground cherry; foxglove; larkspur; Indian tobacco; wisteria; soap berry.
* Poisonous and may produce vomiting, abdominal pain, sometimes diarrhea: horse chestnut/buckeye; rain tree/monkey pod; American yew; English yew; Western yew; English holly; privet; mock orange; bird of paradise bush; apricot & almond; peach & cherry; wild cherry; Japanese plum; balsam pear; black locust.
* Various toxic effects: rhubarb; spinach; sunburned potatoes; loco weed; lupine; Halogeton; buttercup; nightshade; poison hemlock; pig weed; water hemlock; mushrooms; moonseed; May apple; Dutchman's breeches; Angel's trumpet; jasmine; matrimony vine.
* Hallucinogens: marijuana; morning glory; nutmeg; periwinkle; peyote; loco weed.
* Convulsions: china berry; coriaria; moonweed; nux vomica; water hemlock.
 
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