Assertion: medicinal vervain | /r/HasProperty | verbena officinalis
Facets:
Source sentences:
text: True verbena should not be mistaken for Spanish verbena (Thymus hyemalis), or the herb vervain (Verbena officinalis), which are chemically different in composition.
text: Note that the true verbena should not be confused with the herb vervain (also known as Verbena officinalis) or the Spanish verbena (also known as Thymus hyemalis).