This page is archived. It is kept for historical reference, so it is no longer being updated and may not meet accessibility standards.
Key to the Trees of Wisconsin
96. Leaves doubly-toothed (large
teeth with smaller teeth upon them) or conspicuously irregularly
toothed, sometimes also irregularly shallow-lobed; elongate
male aments ("catkins") present on mature individuals
from late summer until flowering time the next spring.
96. Leaves singly-toothed, more
or less regular (teeth approximately equal in size) and without
lobes; without elongate male aments. The key distinctions
get more complicated at this point, though the genera are
fairly easy to recognize with a little experience and the
common species in this group are very distinctive.
