Flowers open in May, followed by red fruit that ripens in October or November. Lobes are usually doubly toothed. Thorns are stout and straight. Leaves are red when unfolding, then become bluish-green. May. Fruit is dark purple when it ripens in October.
Thorns are long and curved.
Leaf tips are acute. Leaves have three to four pairs of short lobes with doubly toothed margins. May. Fruit is reddish-brown and ripens in October. Petioles are usually short. A. Leaves are obovate to oblong obovate in shape, usually somewhat clustered, and borne erect above the twigs.