Gleicheniales

Gleicheniales; Temporal range:
	Dipteris conjugata of the Dipteridaceae
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Subclass:	Polypodiidae
Order:	Gleicheniales; Schimp.
Families
	Dipteridaceae; Gleicheniaceae; Matoniaceae
Synonyms
	Gleicheniatae; Gleicheniopsida; (but see text)

Gleicheniales is an order of ferns in the subclass Polypodiidae (the leptosporangiate ferns). The Gleicheniales have records potentially as early as the Carboniferous, but the oldest unambiguous records date to the Permian.

This article defines the Gleicheniales in a loose sense. For the restricted definition, see Gleicheniaceae.

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