It's a hybrid berry; cross of a blackberry & raspberry.
what fruit is a cross between a
A cross between a pacific backberry (sic) and a raspberry is actually the purple blueberry.
A boysenberry is a cross of a raspberry, blackberry and loganberry, believed to have been developed by farmer Rudolph Boysen. Thus, a blackberry is an ancestor, so to speak of the boysenberry.
grape and loquat The loganberry is a cross between a blackberry and a red raspberry. It is more red than a blackberry and usually grown in family gardens due to its growth habit and difficulty in commercial harvesting.
it looks similar to one, but tastes nothing like a raspberry.
Loganberry - a berry accidentally "created" by James Harvey Logan. It is a cross between a blackberry and a raspberry. See the Related Link.
the raspberry yummy
If you mean blackberry and raspberry by brambles, the answer is yes.
The loganberry was developed in 1881 by James H. Logan (1841-1928), and American lawyer and horticulturist, in Santa Cruz, California. It is a cross between a blackberry and a raspberry.
A boysenberry is a cross between a raspberry and the Pacific blackberry. For a berry, this is a very large fruit (8.0g), with large seeds and a deep maroon color.
The tayberry is a shrub in the genus Rubus of the family Rosaceae and is named after the river Tay in Scotland. It was patented in 1979 as a cross between the blackberry and a red raspberry.