Ribes nidigrolaria

About

The jostaberry is a complex-cross fruit bush in the genus Ribes, involving three original species: the blackcurrant R. nigrum, the North American coastal black gooseberry, R. divaricatum, and the European gooseberry, R. uva-crispa. It is similar to Ribes × culverwellii, the jochelbeere, which is descended from just two of these species, R. nigrum and R. uva-crispa.

Summary from Wikipedia