Cyclosorus
Cyclosorus is a genus of ferns in the family Thelypteridaceae, subfamily Thelypteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). Other sources sink Cyclosorus into a very broadly defined genus Thelypteris, or expand the genus to include other genera which PPG I keeps separate. Thus the online Flora of China suggests there are about 250 species compared to the two species suggested in PPG I.
| Cyclosorus | |
|---|---|
| Cyclosorus interruptus | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Polypodiales |
| Suborder: | Aspleniineae |
| Family: | Thelypteridaceae |
| Subfamily: | Thelypteridoideae |
| Genus: | Cyclosorus Link |
There are also fossil species known from the Eocene of South China and the Quaternary of Australia.
The genus is named from the Greek, referring to the circular sori.
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