I saw this pretty yellow Celandine wildflower at Fort Hill in Eastham on Cape Cod this past week. Calendine is a leafy plant with hairy stems and deep yellow 4-petaled flowers in loose clusters. The flowers are about 3/4″ while the plant grows to 1-3 feet from May to July on wooded edges, which is exactly where I saw it.
Have you ever seen a Celandine?