93. Branches spreading,
canopy not narrowly cylindrical; leaves rounded at the base
and clearly longer than broad with 6-15 large, and often irregular
teeth per side; widespread native species.
|
Populus
grandidentata |
93. Branches strongly upswept
and therefore close to the trunk in a tight, nearly cylindrical
growth form; leaves more or less truncate at the base and
as broad or broader than long, with 20+ small teeth per side;
widely planted as horticultural plants and rarely escaping.
|
Populus
nigra |
|
