Jostaberry Jostaberry The jostaberry ("Ribes" × "nidigrolaria") is a complex-cross fruit bush in the genus "Ribes", involving three original species, the black currant "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". The cultivated plants are tetraploid. They are descended from two separate first-generation crosses, both of which produced very few fruit. Fertile tetraploids were produced using colchicine. The name "Jostaberry" was created via combining the German words for blackcurrant and
Ribes roezlii Ribes roezlii Ribes roezlii is a North American species of currant known by the common name Sierra gooseberry. "Ribes roezlii" is native to many of the mountain ranges of California, its distribution extending east into Nevada and north into Oregon. Its habitat includes chaparral, woodlands, and forested areas. "Ribes roezlii" is a spiny shrub growing erect to a maximum height around . The hairless to hairy or woolly leaves are up to 2.5 centimeters (1 inch) long and divided into 3 or 5 rounded, toothed lobes. The inflorescence is a solitary flower or raceme of 2 or 3 small wind-pollinated