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I ris versicolor poisoning. General poisoning notes for Iris versicolor. Blue flag (Iris versicolor) is a native herb found in eastern and central Canada. This plant has been mentioned as causing poisoning in humans and animals, but case reports have not been found.eneral poisoning notes for Iris versicolor. Blue flag (Iris versicolor) is a native herb found in eastern and central Canada. This plant has been mentioned as causing poisoning in humans and animals, but case reports have not been found.
Dangers: Looks similar to the very poisonous cherry laurel. The leaves of cherry laurel smell like cherry/cyanide and have toothed edges while bay laurel leaves have smooth edges and smell like Italian seasoning.Young tree. Leaves closeup (Bay Laurel leaves have smooth edges). Nuts. Teeth (pointy bits along edge of leaves) + cyanide/cherry smell = poisonous cherry laurel.he leaves of cherry laurel smell like cherry/cyanide and have toothed edges while bay laurel leaves have smooth edges and smell like Italian seasoning. Young tree. Leaves closeup (Bay Laurel leaves have smooth edges). Nuts. Teeth (pointy bits along edge of leaves) + cyanide/cherry smell = poisonous cherry laurel.