I have only tried to identify only a few of the local blackberrys. The blackberry microspecies most likely to be found are described below.
First year canes more or less hairless. Anthers exceed the stigmas. Leaves 3 or 5 foliate.
Under-surface of the leaflets are felted and have some longer hairs.
First-year canes purplish, coved with white scales with age. Anther and stigmas at the same level. The undersurfaces of the leaflets are evenly felted.
Image: Lewis Road, Walmer.
Leaves deeply dissected. Southern districts.
Stalked glands on flower stalks, sepals or branches. Under-surface of the leaves green to hairless.
No photo available.