This perennial's leaves are arranged opposite each other, and are simple and serrate. The flowers are large, showy, and yellow and white, and make their appearance during the months of April to June. (Massey 1983) Very little is known about this plant.
Opening of canopy by logging
Three populations are known from Illinois, all of them in the Shawnee National Forest. (Herkert and Ebinger 2002)
This biennial produces large, white flowers during the months of June and July. Photo Credit: Brian Parsons
Likes rich, mesic, shaded to semi-shaded forested slopes. Found in floodplains, stream terraces, roadsides, forests, and in upland forest. Prefers moist soil, and is found in stream banks. (Massey 1983)
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