Seedlings. Key characteristics: cotyledons are obovate and leaves are egg-shaped with wavy margins.
Leaves are very large with wavy margins. Photo courtesy of Wayne Shannon, University of Missouri Outreach and Extension Regional Livestock Specialist.
Flowering plant. Key characteristics: erect-growing; flowers are purple, have a "velcro-like" texture and appear similar to several species of thistles' flowers..
Seed. Seed are elongated with a dull, yellow-brown to black mottling pattern. Length is approximately 5.0 mm.
Life cycle: biennial.