Photographed by B on a recent hike in New Hampshire. I felt off wildflower duty since this is not really my turf. However, this flower is found in our area, so here it is. The leaves are in whorls, and the white petals are really the bracts, not petals, and the flowers are a cluster of small greenish flowers in the center. Will have bright red berries in late summer, good bird food.
Bunchberry, Creeping Dogwood (Cornus canadensis)