As Quebec isn't a nation, Quebec's yellow birch should be excluded.
From the en.wikipedia.org
Its decided color gives the common names gray, white, black, silver and yellow birch to different species.
From the en.wikipedia.org
Yellow birch trees and black raspberry bushes lined the shore, where chestnut-headed mergansers fished in the shallows.
From the telegraph.co.uk
Linda Ronstadt, a half-ton Chevy pickup with a ton of yellow birch cordwood aboard, has sunk to her rusty frame in a mushy patch of logging road.
From the time.com
We stood at the crest of the hill, surveying an Impressionist wash of grey-green broom, yellow birch, and a scarlet stipple of rowan berries.
From the guardian.co.uk
No one there is contesting that the yellow birch is the official tree of Quebec, just whether Quebec counts as a Nation for purposes of our article.
From the en.wikipedia.org
If the trend continued, broad-leafed deciduous trees such as sugar maple and yellow birch could move up the slope, visibly shifting the deciduous-coniferous boundary.
From the newscientist.com
The park is thick with Eastern hemlock, yellow poplar, sweet birch, maple, oak and white pine.
From the kentucky.com
Birch leaves were a pale, lemony-yellow and the larches turning a dusty grey.