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| | Asclepias tuberosa Butterfly milkweed Chiggar Weed Pleurisy Root Seed and Plants (Site not responding. Last check: 2007-11-05) |
 | | The young shoots, stems, flower buds, immature fruits, and roots of butterfly milkweed were boiled and eaten as a vegetable by various indigenous groups of eastern and mid-western America. |
 | | Milkweed species, as a group, are known to contain cardiac glycosides that are poisonous both to humans and to livestock, as well as other substances that may account for their medicinal effect. |
 | | When the roots of the butterfly milkweed were more commonly harvested for their medicinal use, the plants were dug when dormant in the late fall. |
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