157
512
Leaf lobes lanceolate,
with veins ending in
the middle of the
incision between two
teeth
Cystopteris alpina
(Lam.) Desv.
513
Basal pinnae sessile.
Indusium (small
membrane covering
the sori) present
Cystopteris
montana (Lam.)
Bernh. ex Desv.
513
Basal pinnae clearly
stalked. Indusium
absent
514
514
Leaves hairless.
Largest pinnula of the
lowest pinna with 6-10
leaflets, often covering
each other with the
edges
Gymnocarpium
dryopteris (L.)
Newman
514
Leaves with small
glandular hairs at least
on the main veins
(magnifying glass).
Largest pinnula of the
lowest pinna with 10-
20 distant leaflets
Gymnocarpium
robertianum
(Hoffm.) Newman
515
Margin of pinnulae
entire
516
1...,147,148,149,150,151,152,153,154,155,156
158,159,160,161,162,163,164,165,166,167,...444