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39
134
Leaf-base strongly
asymmetrical and
never heart-shaped
Ulmus glabra Huds.
134
Leaf-base symmetrical,
or if asymmetrical
clearly heart-shaped at
base
135
135
Leaves heart-shaped at
base
136
135
Leaves not heart-
shaped at base
139
136
Fruit dry and borne on
a long pedicel with a
transversal wing (look
for fallen fruits below
the tree!)
137
136
Fruit not as above
138
137
Lower surface of
leaves with tufts of
whitish hairs in the
axils of the main veins
Tilia platyphyllos
Scop. s.l.
137
Lower surface of
leaves with tufts of
brown hairs in the axils
of the main veins
Tilia cordata Mill.