No idea what this is?

It reminds me of Rumex of some sort: http://garden.org/plants/searc...

I'd say Rumex obtusifolius, a common lawn weed. They are very handsome plants though!

Check the leaf venation of Rumex obtusifolius ..

http://luirig.altervista.org/s...

https://gobotany.newenglandwil...

http://calphotos.berkeley.edu/...

Now check the leaf venation of Rumex orbiculatus (which is a synonym of Rumex britannica ) ..

http://luirig.altervista.org/s...

http://www.theplantlist.org/tp...

Given the misinformation on the internet, and variability of some plants, I wouldn't assign a definite name to it.

these things have a long taproot kind of like dandelions do and I have yet to kill one i think w/o roundup and probably multiple applications. You can't pull them, they just break off and then they grow back. Very robust. I kind of hate them. I just use a paint brush and apply the roundup right to the leaves that way it doesn't get anywhere I don't want it.

I would think twice before using Roundup,
http://articles.mercola.com/si...
http://naturalsociety.com/mons...
http://www.scientificamerican....

The total prohibition of Roundup is in progress in the European Union and is expected soon
France has not waited and banned it already.

I am quite aware of the evils of roundup. I see nothing wrong w the average homeowner painting it on a weed here and there. Spraying thousands of acres of food however is another matter. Thankfully I don't live in France so I don't have to worry about it as yet. I have no intentions of highjacking this thread, I was only letting Keith know how I deal with the specific plant that he asked about, nothing more.

We have had pretty good luck digging them up when we see them. Make sure to get the taproot.

oh, well I guess I should explain a little, digging them will work (although the tap root can go down a long ways) if they are accessible where you can dig. I use roundup on mine because they grow up under my roses and I am afraid of damaging the roots of my bush, plus I can't get in there without getting thorned ... So I just lay on the ground kind of and paint the roundup on, that way they die in place and I don't disturb the other plants. I don't notice these in my lawn so I assume that mowing them over and over eventually causes them to die off. I assume they mature and make seed, but I never let that happen, I hope to eventually be rid of them altogether.

When I first tried to make my 'meadow grass lawn' into a 'neat lawn' after moving in, I used a weed killer which had a spray nozzle on broad leaf 'weeds'. It wasn't Roundup, and I thought spot spraying would be OK. Rain followed, the leaves were still green and water stood on the leaves. I saw a Goldfinch (ours are different to those in the US) drinking water off the leaf. I resolved never again to use weedkiller.