Division: Pteridophyta (Filicophyta)
Class: Pteridopsida (Filicopsida)
This genus was regarded as part of the tree fern genus Dicksonia for a long time, although their growth habits are utterly different. It has also long been considered closely related to Pteridium and Hypolepis. Recent genetic testing suggests that it is related, but that the relationship is not as close as was assumed.
This is a tropical genus except for the cool temperate D. punctilobula.
Chromosome counts in this genus are probably derived from multiples of x=12, whereas the counts of Pteridium and Hypolepis appear to be derived from x-13.
Species of Dennstaedtia (list not complete: