Assertion: klammath weed | /r/HasProperty | common species
Facets:
Source sentences:
text: Hypericum perforatum is a common species and is grown commercially for use in herbalism and traditional medicine.
text: Hypericum perforatum, known as perforate St John's-wort, common Saint John's wort and St John's wort,[note 1] is a flowering plant in the family Hypericaceae.