Hello One & All!

Greeting from Nether Lurking, Mid-Wales.

Briefly, an unknown plant popped up in the side of a pot a while ago (season
before last) and out of curiosity I potted it on. I now have a catkined
curiosity. Anyone any ideas what it might be?

Pics he http://preview.tinyurl.com/367d8t

Apologies if I've screwed up with the pics, made 'em too big or whatever,
but I'm only ham-fisted bloke!

Many thanks - Chris