This section is from the "The Herb Hunters Guide" book, by A. F. Sievers. Also available from Amazon: Herb Hunters Guide.

Figure 55.Golden groundsel (Senecio aureus)
Life root, golden ragwort, swamp squawweed, coughweed, grundy-swallow.
Golden groundsel is found in swamps and meadows from Newfoundland to Ontario, and Missouri, Florida, and Texas.
This plant is a smooth herb with rather slender, solitary or tufted stems one-half to 2 1/2 feet high. The basal leaves, which are 1 to 6 inches long, are heart-shaped or kidney-shaped with long stems and often purplish beneath. The lower stem leaves are lance-shaped and deeply out and the upper most small and clasping. The flower heads, from two-thirds of an inch to about 1 inch broad, consisting of disk and deep yellow ray flowers, are borne several in a flat-topped open cluster during the early summer.
The herb and the root.
 
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