Assertion: klammath weed | /r/HasProperty | st. john’s wort
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text: Hypericum perforatum, St. John’s wort (sometimes commonly called perforate St. John's wort, goatweed or Klamath weed) is an upright, many-branched, stoloniferous, yellow-flowered, herbaceous perennial (some say perennial weed) that is native to Europe, western Asia and northern Africa.