Populus
Populus
The western balsam poplar (P. trichocarpa) was the first tree to have its full DNA code determined by DNA sequencing, in 2006.
Description
!Mature trembling aspen trees ([P. tremuloides) with young regeneration in foreground, Alaska](//upload.wikimedia.org/wikipedia/commons/thumb/c/cd/TremblingAspen.jpg/250px-TremblingAspen.jpg)
Description
The genus has a large genetic diversity, and can grow from 15–50 m (49–164 ft) tall, with trunks up to 2.5 m (8 ft) in diameter.