Photo: Rubus allegheniensis 1.

Green berries, with a black one. Botanical garden Kumpula, Helsinki, Finland. Planted. 2002-07-26.

Rubus allegheniensis Porter
Engl.: Allegheny blackberry, high blackberry, sow-teat blackberry.
Deu.: Alleghenybrombeere, Kratzbeere.
Suom.: karhunvattu, mustavatukka.
Sven.: björnbär.
Bot. syn.: Rubus nigrobaccus Bail., Rubus villosus Ait.