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ID is uncertain vs. V. dentatum (s.st.). A surprising discovery at this location - ~250 km away from the native range, well off in the woods away from any settlement and unlikely to have been planted. Most likely bird-dispersed from a planted individual in the region, but maybe a chance long-distance dispersal.

Heads more or less sessile to long pecuncled, in racemiform clusters; petioles usually hollow, only slightly angled; leaves acute at apex. Florets longer than phyllaries.

Greater Burdock Arctium lappa - heads usually in flat-topped or convex clusters; petioles strongly angled; leaves rounded at apex.