In article m>,
says...
>
> Janet wrote:
>
> >> Burdock is a thistle, a PIA plant to livestock farmers and long haired
> >> dogs but has very pretty flowers. I have some growing here but I
> >> leave them for their flowers (they attract pollenators) and when their
> >> extensive tap root decays it leaves a deep hole that aerates the soil.
> >> http://en.wikipedia.org/wiki/Burdock
> >
> > Interesting. In UK the thistly plant we call burdock looks like this
> >
> > http://morechristlike.com/burdock-leaves/
> >
> > Is that the plant whose roots you cook, Bob?
> >
> > when I was a child we used to drink "dandelion and burdock" (made from
> > roots of both).
>
> The Wikipedia article for the plant whose roots I cook is:
>
> http://en.wikipedia.org/wiki/Arctium_lappa
>
> I think it's the same as the burdock in the link you provided, but it's
> hard to be 100% certain from the pictures.

Looks like it; and your ref says native to Britain. Thanks a lot.
Now I have to go and find some growing.

To think I kept digging it out of my last garden :-)

Janet