Species: A. triphyllum
Toxicity: The oxalic acid in jack-in-the-pulpit is poisonous if ingested. Care should also be taken to avoid confusion with poison ivy, which has three leaflets somewhat similar in appearance.
Arisaema triphyllum (jack-in-the-pulpit, bog onion, brown dragon, Indian turnip, American wake robin, or wild turnip) is a herbaceous perennial plant growing from a corm. It is a highly variable species typically growing 30–65 centimetres (12–26 in) in height with three-parted leaves and flowers contained in a spadix that is covered by a hood. It is native to eastern North America.