Used in Native American traditional medicine, both internally (for diarrhea and malaria) and externally (for sores and skin diseases).
References:
Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
Grieve, M. (Maud). A Modern Herbal; the Medicinal, Culinary, Cosmetic and Economic Properties, Cultivation and Folk-Lore of Herbs, Grasses, Fungi, Shrubs, & Trees with All Their Modern Scientific Uses. New York :Harcourt, Brace & company, 1931.
Image attribution: SB_Johnny - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1409632
