Floating Marsh Marigold Plant Information
Floating Marsh Marigold grows in the following 31 states:Alaska, Connecticut, Illinois, Indiana, Kentucky, Maryland, Minnesota, Nebraska, New Hampshire, North Carolina, Pennsylvania, South Dakota, Vermont, Wisconsin, Oregon, West Virginia, California, Delaware, Iowa, Maine, Massachusetts, Michigan, Missouri, New Jersey, New York, North Dakota, Ohio, Rhode Island, Tennessee, Virginia, Washington
Caltha natans is a species of flowering plant in the buttercup family.
Unlike other species of Caltha that are found in North America, C.natans shows relatively little morphological variation, and has not been divided into infraspecific taxa. The plants typically grow in shallow water, with floating leaves up to 25 millimetres (0.98in) wide and 50mm (2.0in) long, on a petiole (leaf stalk) up to 70mm (2.8in) long. The flowers are roughly 5mm (0.20in) in diameter and have five white sepals; they are produced in late spring (June-August). Each flower forms 20-55 follicles, which contain black, elliptic seeds 0.5-0.8mm (0.020-0.031in) in diameter.
Caltha natans has an amphi-Beringian distribution, being found in both North America and East Asia. In Asia, it is found in Siberia, Mongolia and the Chinese provinces of Heilongjiang and Nei Mongol. In North America, it is found in Alaska, the Canadian provinces of British Columbia, North West Territories, Yukon, Saskatchewan Alberta, Manitoba and Ontario, and in a small part of the contiguous United States (in the states of Minnesota and Wisconsin).
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