Rubus henryi var. bambusarum

Hinkley calls it extremely hardy and rates it a zone 4 while Krussman considers it zone 7, and that is precisely why we dislike zone maps. A scandent species from the bamboo forests of Hueph Province; flowers are pink and berries are black and typical but other than that its very unrubus-like. Looking more like the bamboo it grows with (Lamarckian evolution? its more plausible than the creationists, but I’ll stick with Darwin).