Cornus amomum (Silky Dogwood) Grow Under Pines it can form dense colonies

it can form dense colonies covering the ground

to say the least

Flower Color From White to Deep Purple

Reaching up to six feet it can compete well with aggressive wetland plants

via Wikimedia CommonsPhoto 1:

Cornus amomum (Silky Dogwood) Grow Under Pines it can form dense coloniesCornus amomum (Silky Dogwood) is a medium sized deciduous shrub found in moist lowland areas swamp borders, floodplains, shrub wetlands and along streams and ponds. Tiny yellowish white flowers (showy petal like white bracts are absent) give way to berry like drupes that change from white to blue as they ripen in late summer; attractive to birds. Sun Exposure Prairie Savanna Soil Conditions Wet Mesic, Mesic Height 8' 12' Flower Color Yellow Flower