Thyrsopteris

Thyrsopteris is a genus of tree fern. It contains a single living species, Thyrsopteris elegans, endemic to the Juan Fernandez Archipelago off the coast of Chile. Thyrsopteris is the only genus in the family Thyrsopteridaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] Alternatively, the genus may be placed in the subfamily Thyrsopteridoideae of a more broadly defined family Cyatheaceae,[2] the family placement used in Plants of the World Online as of November 2019.[3] In 2019, a fossil species Thyrsopteris cretacea was described from the Burmese amber of Myanmar, dating to the Cenomanian of the Cretaceous period, around 99 million years ago.[4] Other fossil species include Thyrsopteris shenii from the Paleogene of King George Island, Antarctica[5]

Thyrsopteris
Temporal range: Cenomanian–Recent
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Cyatheales
Family: Thyrsopteridaceae
C.Presl
Genus: Thyrsopteris
Kunze
Species:
T. elegans
Binomial name
Thyrsopteris elegans
Kunze
Synonyms

(family)

  • Thyrsopteridoideae B.K.Nayar

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. "Thyrsopteris Kunze". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-11-23.
  4. Li, Chunxiang; Moran, Robbin C.; Ma, Junye; Wang, Bo; Hao, Jiasheng; Yang, Qun (2020-01-01). "A mid-Cretaceous tree fern of Thyrsopteridaceae (Cyatheales) preserved in Myanmar amber". Cretaceous Research. Non-marine and Marine Cretaceous in China: Stratigraphy, Palaeobiogeography, Palaeoecology and Palaeoclimates. 105: 104050. doi:10.1016/j.cretres.2019.01.002. ISSN 0195-6671.
  5. Zhaonai, Li; Xiaohan, Liu; Ruxiang, Shang (2009-05-29). "The Characteristics and Mechanism of Island-Arc Volcanism on the Central and Southern Fildes Peninsula, King George Island, Antarctica". Acta Geologica Sinica - English Edition. 5 (1): 39–57. doi:10.1111/j.1755-6724.1992.mp5001003.x. ISSN 1000-9515.


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