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 binominatum rounded, toothed lobes. The inflorescence is a solitary flower or a raceme of up to four flowers which dangling from the branches. The flower has five fuzzy sepals in shades of pale green, sometimes edged with red, which are reflexed upward. At the center is a tubular corolla of white or pinkish petals around five stamens and two shorter styles. The fruit is a yellowish green berry about a centimeter (0.4 inch) wide which is covered in long prickles which harden into spines. Ribes binominatum Ribes binominatum is a species of currant known by the common names trailing gooseberry and