Elephant's foot is a native plant which occurs in low woods and along streams. Valued for its late summer to fall bloom and large, attractive lower leaves. Bloom consists of many small flower heads which are arranged in compound inflorescences. Each individual flower head rests upon leafy bracts and contains 2-5, tubular, pale lavender disc florets. When in full bloom, an entire inflorescence may be mistaken for a large, single bloom. Although a member of the composite family, the flowers of elephant's foot are not daisy-like in appearance because each flower head contains only disc flowers. Similar in appearance and closely related to the ironweeds (Vernonia). Large lower leaves provide the inspiration for the common name of Elephant's foot.
(Source: Missouri Botanical Garden)