Family · Ferns & allies
Salviniaceae
Floating ferns
Free-floating aquatic ferns; Azolla hosts nitrogen-fixing cyanobacteria and is used as a rice-paddy fertilizer.
- Accepted species
- 21accepted names · Kew WCVP
- Genera
- 2accepted genera · Kew WCVP
- Origin
- ≈86 MaCretaceous · crown age, Jin & Qian 2022 megatree
- Centre of diversity
- Southern Americamost native species · WGSRPD
Open Salviniaceae in the treePan, zoom and dig into its genera in the interactive view.›
Genera
Salvinia13 spp.
Azolla8 spp.
Where it grows
- Southern America11
- Africa5
- Northern America4
- Asia-Tropical3
- Asia-Temperate3
- Australasia2
- Europe1
- Antarctic1
- Pacific1
Native species richness by botanical continent (WGSRPD level 1), from Kew WCVP.
Related families
Salviniaceae sits in the order Salviniales.