Correct!
Aspens are identified by round (some say, see below), alternate, and simple leaves with green above and paler lower surfaces – easily moved by the wind.
Their leaves’ margins (edges) are described as “serrate.” Excerpt at the right taken from the 1951 “Trees of Washington” manual … nothing much has changed re. tree margins since that time, although some disagree as to the description of the leaf’s shape.
This manual Trees pf Washington, found @
https://cms2.revize.com/revize/cityofcovington/Trees%20of%20Washington.pdf
describes the shape of Aspen leaves as:
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