NOUN
- birch of western United States resembling the paper birch but having brownish bark
How To Use mountain birch In A Sentence
- The area encompasses zones of subarctic mountain birch forest in the lowlands, heather and grassland higher up, and mountainous alpine terrain at the highest altitudes.
- Geometrid moths of two species occur in the mountain birch (Betula pubescens ssp. czerepanovii) forest that makes up the ecotone between boreal forest and the tundra of Fennoscandia. Climate change and insects as a forest disturbance in the Arctic
