Loxsomataceae

The Loxsomataceae are a family of ferns in the order Cyatheales with two extant genera in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Alternatively, the family may be treated as the subfamily Loxsomatoideae of a very broadly defined family Cyatheaceae, the system used in Plants of the World Online.

It has leaves that can be as long as 5 m long. Extant species in this family are found in New Zealand, Costa Rica, and South America. Fossil species in this family, dating from as early as the Jurassic, have been found in North America, India and Japan.

Genera
Two genera are placed in the family in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), each with only one species:
 * Loxsoma R.Br.
 * Loxsomopsis Christ