Blackcurrant (scientific name: Ribes nigrum L.), also known as: blackcurrant, cassis and so on. Deciduous erect shrub, 1-2 meters high; branchlets dark gray or gray-brown, young branchlets brown or brown, with sparse and unequal pubescence; buds long ovoid or elliptic, with several yellow-brown or brown scales. Leaves suborbicular, base heart-shaped, dark green above, pubescent and yellow glandular below; petiole pubescent, occasionally sparsely glandular. Flowers bisexual; racemes pendulous or arcuate; inflorescence axis and pedicels pubescent; bracts lanceolate or ovate-orbicular; calyx pale yellowish green or pale pink; calyx tube subcampanulate; sepals ligulate; petals ovate-orbicular or ovate-elliptic. Fruit suborbicular, black when ripe, sparsely glandular. Fl. May-June, fr. July-Aug.

Heti is the short name for black grapes, which is a Eurasian species - native to the United States, and was introduced to Laixi City, Shandong Province in 1992. Botanical traits: shoot tips green - with sparse tomentum annual branches light yellow-brown. Young leaves are yellowish green with sparse tomentum on the back - mature leaves are smooth and toment-free on both sides, with serrated leaf margins. Bisexual flowers. Fruit characteristics: Fruiting spikes are long conical - average longitudinal diameter 28 cm - transverse diameter 16 cm - average spike weight 500~700 grams, average grain weight 8~10 grams. Thick skin and crisp flesh, blue-black pericarp, bright as paint, sweet and sour taste, soluble solids content of 17% or more. The fruit stalk is not easy to fall off, resistant to storage and transportation.