Gleicheniales

Gleicheniales is an order of ferns in the subclass Polypodiidae (the leptosporangiate ferns). The Gleicheniales appeared in the fossil record at least as early as the Cretaceous.

Gleicheniales

Gleicheniales is an order of ferns in the subclass Polypodiidae (the leptosporangiate ferns). The Gleicheniales appeared in the fossil record at least as early as the Cretaceous.