Small-Flowered Blue-eyed Mary (Collinsia parviflora)
To be honest, we couldn’t possibly tell the difference between this and the previously posted rattanii, but we’re going by bloom time. Besides, we liked this photo. These flowers are really small (as the name suggests), and sometimes below other flowers and grasses. There is a large-flowered version that blooms in May. We saw some this past weekend at Silver Falls State Park.