Cyclosorus

Cyclosorus
Cyclosorus interruptus
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Thelypteridaceae
Subfamily: Thelypteridoideae
Genus: Cyclosorus
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Cyclosorus is a genus of ferns in the family Thelypteridaceae, subfamily Thelypteridoideae, in the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] Other sources sink Cyclosorus into a very broadly defined genus Thelypteris,[2] 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.[3][1]

There are also fossil species known from the Eocene of South China[4] and the Quaternary of Australia.

The genus is named from the Greek, referring to the circular sori.[5]

  1. ^ a b Cite error: The named reference PPGI was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference POWO_30005264-2 was invoked but never defined (see the help page).
  3. ^ Lin, Youxing; Li, Zhongyang & Iwatsuki, Kunio, "Cyclosorus", in Wu, Zhengyi; Raven, Peter H. & Hong, Deyuan (eds.), Flora of China (online), eFloras.org, retrieved 2020-01-16
  4. ^ A new find of the fossil Cyclosorus from the Eocene of South China and its paleoclimatic implication. Serge V. Naugolnykh, Li Wang, Meng Han and Jian-Hua Jin; 2016, Journal of Plant Research. 129 (1), pages 3–12, doi:10.1007/s10265-015-0765-0
  5. ^ Les Robinson - Field Guide to the Native Plants of Sydney, ISBN 978-0-7318-1211-0 page 320