A vigorous to very vigorous climbing vine. Shoots are cylindrical or slightly angled and usually smooth and slender. Diaphrams are thin, tendrils are slender, intermittent, and usually bifid. Leaves are approximately as broad as long without measuring the pointed tip. Clusters are medium to small, generally compact, and shouldered.
Berries are small to medium, black with a heavy blue bloom.
Seeds usually 2-4, small, slightly notched, short, plump, and with short beak. Very variable in flavor and time of ripening. Small to medium, compact clusters with short peduncle and often many berries. Berries small to medium, sharply acid, but without any foxy or wild taste. When thoroughly ripe or over-ripe and even slightly shriveled, the flavor is much liked by many.