It looks a lot like rhubarb, Mystang, but the leaves are furry instead of smooth and the stems are thinner and drier. When I was a kid, I thought it was "wild rhubarb" until the burrs appeared.
Stormy, that is good information. A lot of the cautions about plants are exaggerated, I know... but I tend to err on the side of caution. You are perfectly correct that there is safety in variety.