Icarus filiformis

Icarus is a genus of ferns in the family Blechnaceae, subfamily Blechnoideae, with a single species Icarus filiformis, according to the Pteridophyte Phylogeny Group classification of 2016 (PPG I).[1] The genus is accepted in a 2016 classification of the family Blechnaceae,[3] but other sources sink it into a very broadly defined Blechnum, equivalent to the whole of the PPG I subfamily.[4]

Icarus filiformis
Icarus filiformis in Christchurch Botanic Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Blechnaceae
Genus: Icarus
Gasper & Salino[1]
Species:
I. filiformis
Binomial name
Icarus filiformis
(A.Cunn.) Gasper & Salino[1]
Synonyms[2]
  • Blechnum filiforme (A.Cunn.) Ettingsh.
  • Blechnum reptans (Banks & Sol. ex G.Forst.) Luerss.
  • Lomaria filiformis A.Cunn.
  • Lomaria pimpinellifolia Hook.f.
  • Lomaria propinqua A.Cunn.
  • Lomariopsis heteromorpha (Sm.) T.Moore
  • Osmunda reptans Banks & Sol.ex G.Forst.
  • Spicanta filiformis (A.Cunn.) Kuntze
  • Stenochlaena feejeensis Brack.
  • Stenochlaena heteromorpha J.Sm.
  • Struthiopteris filiformis (A.Cunn.) Ching

Icarus filiformis, synonym Blechnum filiforme,[2] is known as thread fern or pānoko in Māori. It is endemic to New Zealand. It has a creeping and climbing habit. It has three different types of fronds: long climbing fronds with long pointed leaves, shorter creeping fronds with nearly round leaves, and fertile fronds with threadlike leaves that give the species its common name.[5]

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. Hassler, Michael & Schmitt, Bernd (November 2019). "Icarus filiformis". Checklist of Ferns and Lycophytes of the World. 8.11. Retrieved 2019-12-24.
  3. Gasper, André Luís De; Dittrich, Vinícius Antonio De Oliveira; Smith, Alan Reid & Salino, Alexandre (2016-09-21), "A classification for Blechnaceae (Polypodiales: Polypodiopsida): New genera, resurrected names, and combinations", Phytotaxa, 275 (3): 191–227, doi:10.11646/phytotaxa.275.3.1, ISSN 1179-3163, retrieved 2019-12-22
  4. 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
  5. Crowe, A. (1994), Which Native Fern?, Auckland: Viking, p. 26, ISBN 0-670-85549-9


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