Also called large-toothed aspen, American aspen, white poplar and more.
Part of
aspen/cottonwood/poplar genus Populus
in
willow family Salicaceae.
Native to 🇨🇦 Canada and 🇺🇸 USA, east of the 🗻︎ Rocky Mountains.
🌎︎ Map by county (🇺🇸 USA-48),
🌎︎ map (North America, Central America). 
And according to the 🇺🇸 USDA link below, British Columbia.
Uses by native peoples
(Ethnobotany database)
Populus hosts caterpillars of 367 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.
Often grows in clonal colonies
[1]
—look around for other stems!
Aspen is well-adapted to 🔥︎ fire—after a fire, it produces new trunks from the its roots or trunk base. Aspen often grows with
jack pine Pinus banksiana
—after a fire, both grow fast and eventually would get shaded out by
spruce genus Picea
and
fir genus Abies,
until again invigorated by the next cycle of fire.
Propagation protocol.