Lindsaeaseae contains genera that were formerly considered part of Dennstaedtiaceae

Dennstaedtiaceae

Dennstaedtiaceae is one of fifteen families in the order Polypodiales, the most derived families within monilophytes . It includes the world's most abundant fern, Pteridium aquilinum . Members of the order generally have large, highly divided leaves and have either small, round intramarginal sori...

. Molecular data supported the separation of Lindsaeaseae into its own family. Lindsaeaseae is considered the most basal of the order Polypodiales

Polypodiales

The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas...

. Characteristics include: Rhizomes short to long creeping; rhizomes with nonclathrate scales or uniserate hairs; blades 1-3 pinnate or more divided; veins usually free; sori marginal or submarginal; indusia open towards margin, sometimes attached at sides, or sori covered by the reflexed segment margin


The genus Lonchitis has many morphological characteristics similar to Dennstaedtiaceae

Dennstaedtiaceae

Dennstaedtiaceae is one of fifteen families in the order Polypodiales, the most derived families within monilophytes . It includes the world's most abundant fern, Pteridium aquilinum . Members of the order generally have large, highly divided leaves and have either small, round intramarginal sori...

, but a few characteristics of the spore are similar to the lindsaeoid genera, and molecular data strongly places this genus in Lindsaeaseae