United States, Illinois, DeKalb, Base Line Road, 2.2 miles SW of Genoa, near South Branch Kishwaulkie R. Knute Olsen Forest Preserve. Woodland and bottomland.
Perennial, locally common, low growing, rhizomatous, forming large patch, no fruits evident. VOUCHERS FOR PLANT SAMPLES FOR ANTIAIDS-ANTICANCER TESTING. Sample part: PL. NCI Code OGDK-0029-N