Northern Prairie Wildlife Research Center
Aquatic and Wetland Vascular Plants of the Northern Great Plains
9. Ranunculaceae, the Buttercup Family
2. Caltha L. -- Marsh marigold, cowslip
1. Caltha palustris L.
Loosely clumped, coarsely rooted perennial 2-6 dm tall; stems hollow,
rather succulent, glabrous throughout. Leaves simple, the blades rotund-cordate,
with the basal lobes separate or overlapping, 4-10(15) cm across, the margin
shallowly dentate; membranous stipulelike appendages present at the nodes. Flowers
few to several terminating each stem, showy, 2-4 cm across; sepals 4-9,
bright yellow, petaloid, 12-20 mm long; petals none; stamens many;
pistils 4-12, with very short styles. Follicles somewhat recurved
and splitting lengthwise along the inside wall, 1-1.5 cm long. Flowering May--early
Jun, fruiting Jun--early Jul. Swamps, springs, boggy areas and along fresh streams;
occasional in e and c ND, e SD and e NE; (Circumboreal, in N.Amer. s to VA,
WV, NC, TN, IN, IL, IA and NE).
Previous Species -- Anemone canadensis L.--
Return to Family -- Ranunculaceae -
The Buttercup Family
Next Species -- Myosurus minimus L.