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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Polypodiaceae >
Veins anastomosing
Polypodiaceae
consider the other alternative
Epiphytic or
rupestral
ferns with long-creeping rhizomes.
Sori
round or, if elongated and confluent, then 2–6.5 cm long.
Scale
-fronds absent
consider the other alternative
Lamina
glabrous
or with a few
clathrate
scales along the veins.
Paraphyses
absent or with enlarged apices, never
stellate
. Scales of the
rhizome
clathrate
at least towards the middle
consider the other alternative
Stipe
< 20 cm long.
Lamina
simple
or
pinnatifid
consider the other alternative
Free included veinlets in the
areolae
of the
lamina
absent except in rare cases in the Australian species; the veins almost hidden.
Lamina
simple
Dictymia