''Cyclosorus'' is a genus of
fern
The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. They differ from mosses by being vascular, i.e., having specialized tissue ...
s 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
''Thelypteris'' (maiden ferns) is a genus of ferns in the subfamily Thelypteridoideae, family Thelypteridaceae, order Polypodiales. Two radically different circumscriptions of the genus are in use . In the Pteridophyte Phylogeny Group classifi ...
'',[ 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.][
][
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.][Les Robinson - Field Guide to the Native Plants of Sydney, page 320]
Species
, the ''Checklist of Ferns and Lycophytes of the World'' accepted the following extant species, although noting that only two to four probably belonged in the genus '' sensu stricto'', the rest needing in future to be distributed among other genera.[
*'' Cyclosorus angustipinnatus'' C.Chr. & Tardieu ex Tardieu
*'' Cyclosorus attenuatus'' Ching ex K.H.Shing
*'' Cyclosorus cuneatus'' Ching ex K.H.Shing
*'' Cyclosorus exindusiatus'' (W.H.Wagner) W.H.Wagner
*'' Cyclosorus interruptus'' (Willd.) H.Itô
*'' Cyclosorus jinghongensis'' Ching ex K.H.Shing
*'' Cyclosorus lenormandii'' (C.Chr.) Ching
*'' Cyclosorus molundensis'' (Brause) Pic. Serm.
*'' Cyclosorus nanxiensis'' Ching ex K.H.Shing
*'' Cyclosorus parvifolius'' Ching
*'' Cyclosorus pygmaeus'' Ching & C.F.Zhang
*'' Cyclosorus shimenensis'' K.H.Shing & C.M.Zhang
*'' Cyclosorus striatus'' (Schum.) Ching
*'' Cyclosorus subacutus'' Ching
*'' Cyclosorus thailandicus'' S.Linds.
*'' Cyclosorus tottus'' (Thunb.) Pic. Serm.
*'' Cyclosorus wulingshanensis'' C.M.Zhang
]
References
External links
*
*
''Cyclosorus''
at Tropicos
Thelypteridaceae
Ferns of Asia
Ferns of Australasia
Fern genera
{{Polypodiales-stub