Loxsomataceae

Loxsomataceae
Loxsoma cunninghamii
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Cyatheales
Family:	Loxsomataceae C.Presl
Genera
See text.

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).^[1] Alternatively, the family may be treated as the subfamily Loxsomatoideae of a very broadly defined family Cyatheaceae,^[2] the system used in Plants of the World Online as of November 2019^[update].^[3]

It has leaves that can be as long as 5 metres (16 ft) 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.^[4]

Genera

Two genera are placed in the family in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), each with only one species:^[1]

• Loxsoma R.Br.
• Loxsomopsis Christ

References

1. PPG I (2016). "A community-derived classification for extant lycophytes and ferns". Journal of Systematics and Evolution. 54 (6): 563–603. doi:10.1111/jse.12229. S2CID 39980610.
2. Christenhusz, Maarten J.M. & Chase, Mark W. (2014). "Trends and concepts in fern classification". Annals of Botany. 113 (9): 571–594. doi:10.1093/aob/mct299. PMC 3936591. PMID 24532607.
3. "Loxsomataceae C.Presl". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-11-24.
4. Thomas N. Taylor, Edith L. Taylor & Michael Krings (2009). "Loxsomataceae". Paleobotany: the biology and evolution of fossil plants (2nd ed.). Academic Press. p. 469. ISBN 978-0-12-373972-8.