Illinois Exotic Species:
waterclover Marsilea quadrifolia

Waterclover may be found in ponds, streams and roadside ditches. Resembling four-leaf clovers on long, thin stalks, these aquatic plants are ferns. Waterclover is used in water gardens and horticultural plantings and has escaped to the wild. It competes with native plants in both aquatic and moist terrestrial habitats. Waterclover has been established in the northeastern United States for more than 100 years. The introduced range of this European species includes scattered locations throughout Illinois.

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