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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.
Answers. Best Answer: Some resources list all parts of Epipremnum, Pothos, Philodendron and Scindapsus as poisonous if ingested. The toxic principal is calcium oxalate crystals. Symptoms include burning and swelling of lips, mouth, tongue, and throat, also diarrhea. Reportedly toxic only if large amounts are eaten.