I can see big-toothed aspen Populus grandidentata

Verify with Google images.

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 (.pdf).   And according to the USDA, 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 (.pdf).

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