butterfly weed

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Related to orange milkweed: Asclepias tuberosa, swamp milkweed

butterfly weed:

see milkweedmilkweed,
common name for members of the Asclepiadaceae, a family of mostly perennial herbs and shrubs characterized by milky sap, a tuft of silky hairs attached to the seed (for wind distribution), and (usually) a climbing habit.
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