It's been Stolon?

Oh just look it up EH?
;¬)  
I was out on the prowl, again, when I spotted a "Blackite" (Bramble) runner.  Closer inspection yielded that - "Not only… but also"© there was the one I saw plus a sneaky one much lower; which I hauled out to reveal not one, but a veritable clutch of Stolons.  thus avoiding a further four bramble plants.  Any wonder they talk about a thicket of them?
Next job - Git shot o'them.