Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
18. Droseraceae, the Sundew Family
1. Drosera L. -- Sundew
1. Drosera rotundifolia L. -- Round-leaved sundew
Small perennial (or annual), insectivorous bog plant. Leaves in a basal
rosette, circinate in bud, broadly obovate to rotund or depressed-obovate, 2-10
mm long, about as wide or wider, glandular-viscid, covered with long reddish,
gland-tipped hairs, tapering to a stout petiole 2-5(9) cm long. Flowers
2-many, in a simple or forked, mostly 1-sided, racemelike cyme, borne on a naked
scape usually 10-25 cm tall; sepals (4)5, connate below, narrowly oblong,
4-6 mm long, erose at the tip; petals (4)5, white, marcescent, oblong,
slightly to considerably exceeding the calyx; stamens (4)5, slightly
shorter than the petals; carpels 3(-5), deeply cleft, ovary slightly
inferior. Fruit a many-seeded, 3(-5)-valved capsule, surpassing the calyx.
Seeds light brown, finely striate and shiny, fusiform, 1-1.5 mm long.
Jul--Aug. Swamps and bogs; rare, with one record from a sphagnum bog in Bottineau
Co., ND; (Circumboreal, in N.Amer. s to VA, FL, AL, IL, MN, ND, ID, NV and CA).
Return to Family -- Droseraceae - The Sundew