Also called large-toothed aspen, American aspen, ◼︎ white poplar (although do not confuse with sister-species
◼︎ white poplar Populus alba
and
quaking aspen Populus tremuloides,
which are also sometimes called that), 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), 
🗺 today + with climate change (eastern 🇺🇸 USA).
And 🇨🇦 British Columbia, according to the 🇺🇸 NRCS link ↓ below.
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 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.