WATERPOD, Ellisia nyctelea L. 1, entire plant; 2, flower; 3, seed pod with enlarged calyx at base; 4, seed. Annual, reproducing by seed. Stems branching widely at base, 6 to 18 inches (15 to 45 cm) tall. Leaves deeply cut into numerous divisions which are 1- to 3-toothed, alternate or opposite. Flowers small, 5-lobed, whitish to pale blue, borne singly on long hairy stalks. Seed pod green, hairy, drooping, 2-celled, containing 4 seeds, surrounded at base by 5 green, enlarged sepals. Seeds oval, brown, with pitted surface. Found chiefly in moist areas on wasteland and along ditches.