Unidentified Weed.

Having been away for a few days without a useful internet connection, I am now making use of the fact that Mrs TD is away for a “Girlie” week-end to try and catch up with Blip.
 
So, last Sunday, the day before we left, I paid a quick visit to the bees to give them a last minute feed and make sure that all was in order. I had previously noticed this strange weed standing about three feet tall on one of the Hugel beds; it is unlike anything I can put a name to and, it seems, none of the Lost Gardeners can identify it. Herself can usually shed some sort of light on such riddles but is completely stumped over this.