41
121
Buds directly attached
to the branch, with
many overlapping
scales. Shrub usually <
8 m tall, most common
near treeline
Alnus viridis
(Chaix) DC. subsp.
viridis
121
Buds stalked, with 2
opposite scales. Tree >
8 m tall at maturity,
most common below
treeline
122
122
Young branches
hairless. Leaves
hairless on the
underside (except
sometimes along the
main veins)
Alnus glutinosa
(L.) Gaertn.
122
Young branches hairy.
Leaves evenly hairy
on the underside
Alnus incana (L.)
Moench
123
Leaves wider in the
basal half, with more
than 14 pairs of veins.
Fruit with an entire
wing
Ostrya carpinifolia
Scop.
1...,31,32,33,34,35,36,37,38,39,40
42,43,44,45,46,47,48,49,50,51,...444