Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
23. Primulaceae, the Primrose Family
2. Lysimachia L. -- Loosestrife
1. Lysimachia ciliata L. -- Fringed loosestrife
Plants erect, simple or sparingly branched above, 3-10 dm tall, from long-spreading
rhizomes. Leaves distinctly petioled, the blades dark to bright green
above, slightly paler beneath, ovate to ovate-lanceolate, 4-13 cm long, 2-6
cm wide, acute to acuminate, short-ciliate on the margin, subcordate to rounded
or somewhat attenuate at the base; petioles 0.5-4 cm long, ciliate for
the entire length. Flowers single from the upper axils, on pedicels 2-6(8)
cm long; calyx lobes lanceolate, 4-8 mm long; corolla lobes rotund
to obovate, 5-12 mm long, finely erose, apiculate; anthers 2-3.5 mm long;
staminodes present, inconspicuous, narrowly triangular, 1-2 mm long, membranous.
Capsules 4-7 mm in diameter, containing many angular, dark brown to black
seeds 1-2 mm long. Jul--Aug. Shores, stream banks, wet meadows, ditches, floodplains,
moist woods and thickets; common; (Que. to AK, s to FL, TX, NM, UT and OR).
Previous Species -- Glaux maritima L.
Return to Family -- Primulaceae - The
Next Species -- Lysimachia hybrida Michx.