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 californicum Ribes californicum Ribes californicum, with the common name hillside gooseberry, is a North American species of currant. It is endemic to California, where it can be found throughout many of the California Coast, Transverse, and Peninsular Ranges in local habitat types such as chaparral and woodlands. "Ribes californicum" is a mostly erect shrub growing to a maximum height around . Nodes along the stem each bear three spines up to in length. The hairy to hairless leaves are long and divided into oblong, toothed lobes. The inflorescence is a solitary flower or raceme of up to three flowers which hang