Leaves, stems, and milky sap. When touched, causes irritant dermatitis. If ingested, may cause gastritis. Leaves large and variable, the most common being heart-shaped. When ingested, causes painful burning of the lips, mouth, tongue, and throat.
Contact dermatitis is common.
Are often spiny, hairy, or have stinging hairs. Berries are black, orange, yellow, or red. Entire plant, especially the berries. When ingested, causes gastric irritation, scratchy feeling in the throat, fever, and diarrhea. Flower may be white or green.