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Noun: poison milkweed
  1. Milkweed of southwestern United States and Mexico; poisonous to livestock
    "Ranchers carefully removed poison milkweed from their pastures";
    - horsetail milkweed, Asclepias subverticillata

Derived forms: poison milkweeds

Type of: milkweed, silkweed

Encyclopedia: Poison milkweed