Aquatic and Wetland Vascular Plants of the Northern Great Plains
30. Lythraceae, the Loosestrife Family
2. Lythrum L. -- Loosestrife1. Lythrum alatum Pursh
Glabrous, rhizomatous perennial 2-8 dm tall; stems simple or usually branched above. Leaves usually opposite below and alternate above, ovate-lanceolate to lanceolate, 1-4 cm long, 3-10 mm wide, acute at the tip, rounded at the base. Flowers solitary in the axils of the bracts, dimorphic, either the stamens or the style exserted; calyx tube 4-6 mm long, glabrous, with appendages ca. 2X as long as the calyx lobes; petals 3-7 mm long; stamens usually 6. Jul--Aug. Wet meadows and ditches, especially in sandy areas; occasional in se ND, e and s SD, e and c NE; (Ont. to ND and WY, s to GA, AL and OK). L. dacotanum Nieuw.
 Lythrum alatum. |
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