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 lacustre planting of any currant and gooseberry species is prohibited. Ribes lacustre The shrub Ribes lacustre is known by the common names prickly currant, black swamp gooseberry, and black gooseberry. It is widely distributed, from California to Alaska and across North America east to Pennsylvania and Newfoundland, and south as far as New Mexico. The shrub grows erect to spreading, 0.5–2 m. Clusters of reddish to maroon flowers bloom in spring. The fruit consists of dark purple berries 6–8 mm long. It blooms in April through August and may be found in low-elevation forests to the subalpine. Outside its native range,