This largely midwestern species is close to typical herbacea, and some colls. from Ky. have been hard to distinguish. W also noted that "material from Virginia is ambiguous". S. lasioneura has relatively short peduncles: usually 1-3 x subtending petiole and up to 12 cm (versus 4-8 x petiole and up to 30 cm). Inflorescences reportedly have up to ca. 35 flowers,(versus 100). Its leaves are pale green beneath and puberulent on veins (versus glaucous and usually glabrous).