Assertion: boysenberry's blackberry | /r/HasProperty | rubus ursinus
Facets:
Source sentences:
text: Boysenberry, a very large bramble fruit, considered to be a variety of blackberry (Rubus ursinus).
text: Boysenberries are very large bramble fruits (think the size of a human thumb), and are considered to be a variety of the blackberry (Rubus ursinus).
text: Raised from seed by James Harvey Logan, a lawyer and amateur horticulturist, the plant is thought to be a hybrid between the wild blackberry (Rubus ursinus) of the Pacific coast and the red raspberry (Rubus idaeus), a cosmopolitan species.
text: The loganberry (Rubus × loganobaccus) is a hybrid of blackberry (Rubus ursinus) and raspberry (Rubus idaeus).