There was some cinnamon fern nearby, and I'm pretty sure this is a different species. I'm liking O. Claytoniana.
Una, this was somewhere around 2000 feet of elevation, along a logging road in mixed woods near a river, in Maine. Woods had a lot of fir and birch, other trees harder to identify (some not leafed out yet). Road provided extra sun which was liked by bluets and strawberries and by a plant with a flower similar to dandelion but a different leaf structure. (Instead of a rosette of serrated leaves and a smooth flower stem, this had no leaves, just a stem with undeveloped leaflets along it (reminded me of indian pipe) . Also the "fluff" on its seeds was unbranched, unlike dandelion seeds which have an umbrella shape.) In slightly shadier spots I saw some purple trillium.