Assertion: blue vervain | /r/HasProperty | v. hastata
Facets:
Source sentences:
text: The blue vervain (V. hastata) reaches a height of 1.5 metres (5 feet) and produces spikes of blue to purple flowers.
text: Verbena officinalis is the most common species used in herbal remedies, however, other members of the family Verbenaceae may be interchangeable, such as blue vervain (V. hastata) and MacDougal verbena (V. macdougalii).