Flowers: calyx tube broadly urceolate-campanulate, 20-25 × 10-12 mm; lobes spreading, 3-6 × 4-9 mm.

Flowering late winter-spring (Mar-May). Upland and wetland deciduous, mixed and coniferous forests; often found along edges of wetlands; 0-100 m; Ala., Fla., La., Miss.