June - October
0.3 - 1.0
Rounded fruits without stalks in the axils of leaves. Erect plant. Alternate leaves, attenuate near the bottom. Flowers solitary in axils, 4 sepals, no petals. Capsules oblong.
Cylindric-fruit seedbox grows in wet places in ditches and swamps throughout Louisiana and eastern Texas.
Wet or muddy soils or shallow water.