This section is from the book "How To Know The Wild Flowers", by Frances Theodora (William Starr Dana). Also available from Amazon: How To Know The Wild Flowers.
Two to six feet high. Stem. - Stout. Leaves. - Divided into from three to eight pairs of sharply toothed leaflets. Flowers. - White, in compound umbels.
This plant is found growing in water or wet places throughout North America.
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