Not the native one, wonder how it got there? I think these only grow from pieces of root, so either someone dumped some dirt or it is a relic of an old planting.

Finally a topic dear to my heart. In the last year I discovered smell. Yes Jasmine fills the garden in the evening. But then there are 4 O'clocks. And then try Angel's Trumpets. Or Acidanthera. Or Moon Flower. If you have not tried some scent gardening, you have not yet gardened. Antique roses. For most it is in the late afternoon/early evening that you have to walk the gardens to appreciate, but you have not gardened until you get past the visual and into the scent. I promise it will add an entirely new dimension to your gardening. Enjoy. Here is a link that might be useful: My Garden Journal

Nuttallanthus canadensis. Here is a link that might be useful: Nuttallanthus

Sarracenia purpurea, one of the Hardy insectivorous pitchers. This one is the most widely distributed going all the way from Florida to Alberta if memory serves. Not really a water plant so much as it is an acid bog plant. The crown is usually above the waterline. The flower has actually dropped its petals and is now forming seeds. There are several varieties of purpurea, including burkei, venosa, montana, and heterophylla, but chances are that this is just straight purpurea. Here's mine blooming about a month ago. (Sorry it's sideways: stupid phone)