Also called northern swamp dogwood and red-panicle dogwood.
Part of
dogwood genus Cornus
in
family Cornaceae.
Native to southern 🇨🇦 Canada, and western and northern 🇺🇸 USA.
🗺 Map by county (🇺🇸 USA-48),
🗺 map (North America, Central America). 
Uses by native peoples
(Ethnobotany database)
Cornus hosts caterpillars of 121 species
of butterflies and moths, in some areas.
This plant is also known to be a host for (in areas where invasive)
🐝︎ spotted lanternfly (SLF) Lycorma delicatula.
In areas where this plant is native, this plant is among
the wet-loving (but terrestrial
) shrubs and trees planted to protect eroding streambanks, lakeshores, floodplains, stormwater detention ponds, road slopes and landslides, using a process called
live-staking.