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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).
GIF-Drosera rotundifolia
Drosera rotundifolia
GIF- Distribution Map

Map key


Return to Family -- Droseraceae - The Sundew Family

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