Lesser Burdock

Arctium minus
Liten kardborre: juli, oktober, november

Downy Burdock

Arctium tomentosum
Ullig kardborre: maj, juli, augusti

  Here's a couple of rosette leaves for starters. Although one of the samples is from the autumn, the other from the spring, they are both from the rosette stage, before the flowering stem starts shooting. The Arctium minus was sampled in November. The Arctium tomentosum in May: the same substantial individual that I could follow through the months (July photo below), and see the flowers come out properly cobwebbed and in an umbel.
  In the Göteborg region the Arctium minus is the more common burdock. This sample leaf from a basal rosette (to the left) had a nicely characteristic hollow stem - that's what the sliver is: the inside of the tube cut open. The crossections are from another, bigger, leaf of the same rosette (photo at the very bottom of this page).

Within the S-weed domain there wasn't a Lesser Burdock to match the Downy one this summer, just this single specimen, making do under cramped conditions. That's life for urban wildflowers... with better luck in settling, it could have been just as assertive as its Downy neighbour.