#14. This wildflower is Large-leaved Avens. Its scientific name is Geum macrophyllum.

One can be sure to identify Large-leaved Avens as itself, rather than a buttercup by noting that the petals are a non-shiny yellow, and that the buttercup is rarely as tall, and most often doesn't have the 3-parted or ternate leaf atop the stem, just below the flowers.