It does resemble Solomon's Seal. You didn't state where you live, or the general area of the country the plant is growing so I don't know which variety might grow in your area but for comparison, we do have quite a few listed in our database with photos and information: http://garden.org/plants/searc...
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!