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.
|
97 |
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.
|
106 |
|
