Pagina 29 - Flora of the Southern Carnic Alps

29
79
Leaves hairless on the
underside. Young
branches hairless or
almost so
80
80
Leaf-stalks absent or <
7 mm long. Acorns on
2-5 cm long pedicels
Quercus robur L.
subsp. robur
80
Leaf-stalks > 7 mm
long. Acorns almost
sessile
Quercus petraea
(Matt.) Liebl.
subsp. petraea
81
Leaves triangular or
diamond-shaped in
outline
82
81 Leaves oval, rounded
or lanceolate in outline 84
82
Leaf margin with
obtuse teeth. Bark not
papery
Populus nigra L.
82
Leaf margin with
acute teeth. Bark
white, papery
83