Blackcurrant material from the gooseberry ("Ribes grossularia"), the red currant ("Ribes rubrum") and the flowering currant ("Ribes sanguineum"). The resulting offspring were further back-crossed to "R. nigrum". Cultivars produced include 'Tisel' and 'Tiben' in 2000 and 'Ores', 'Ruben' and 'Tines' in 2005. Further cultivars 'Polares' and 'Tihope' are being tested. Since 1991, New Zealand has become an important centre for research and development, as its temperate climate is particularly suitable for cultivation of the crop. Breeding programmes are concentrating on yield, large fruit size, consistency of cropping and upright habit. In North America, there is a need for this fruit to
Ribes viscosissimum It is said to cause violent vomiting shortly after ingestion. Ribes viscosissimum Ribes viscosissimum is a North American species of currant known by the common name sticky currant. It is native to western Canada and the western United States from British Columbia and Alberta south as far as California, Arizona, and Colorado. "Ribes viscosissimum" grows in mountain forests, streambanks, and plateau sagebrush. It is a spreading to erect shrub growing one to two meters (40-80 inches) in height, its stem coated in sticky glandular hairs but lacking spines and bristles. It is resinous and fragrant. The highly glandular leaves have