Abacopteris

Abacopteris is a small genus of ferns in the family Thelypteridaceae.[1]

Abacopteris
A.insularis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Polypodiales
Suborder: Aspleniineae
Family: Thelypteridaceae
Genus: Abacopteris
Fée[1]
Species

See text.

Synonyms[1]
  • Dryopteris sect. Abacopteris C.Chr.
  • Thelypteris subgen. Abacopteris K.Iwats.
  • Cyclosorus subgen. Abacopteris (Fée) Panigrahi

Description

Abacopteris is a genus of medium- to large-sized ferns. Species in the genus usually have long-creeping rhizomes, with brown linear-lanceolate scales that extend onto the base of the stipe (stalk of the leaf).[2]

Fronds are pinnately divided, and fertile and sterile fronds are similar in appearance. The stipes are straw-colored, brown, or reddish.[2]

Leaf blades are green in color and thin to leathery in texture. The terminal pinna at the apex of the blade is similar in appearance to the lateral pinnae. The pinnae are not significantly smaller towards the base of the leaf. They may be entire (without teeth or lobes), crenate, or in one species, shallowly lobed.[2]

Taxonomy

Abacopteris was previously sunk into Pronephrium but was restored as a full genus as a result of a phylogenetic study of the family Thelypteridaceae.[3][2]

Species

As of June 2022, World Ferns accepted the following species:[1]

  • Abacopteris afra (Christ) comb.ined.
  • Abacopteris aspera (C.Presl) Ching
  • Abacopteris birii (R.D.Dixit & Balkr.) S.E.Fawc. & A.R.Sm.
  • Abacopteris gardneri (Holttum) S.E.Fawc. & A.R.Sm.
  • Abacopteris gracilis (Ching ex Y.X.Lin) S.E.Fawc. & A.R.Sm.
  • Abacopteris gymnopteridifrons (Hayata) Ching
  • Abacopteris hirtisora (C.Chr.) S.E.Fawc. & A.R.Sm.
  • Abacopteris macrophylla (Ching ex Y.X.Lin) S.E.Fawc. & A.R.Sm.
  • Abacopteris nitida (Holttum) S.E.Fawc. & A.R.Sm.
  • Abacopteris nudata (Roxb.) S.E.Fawc. & A.R.Sm.
  • Abacopteris peltochlamys (C.Chr.) Holttum
  • Abacopteris repanda (Fee) S.E.Fawc. & A.R.Sm.
  • Abacopteris setosa (Ching ex Y.X.Lin) S.E.Fawc. & A.R.Sm.
  • Abacopteris yunguiensis (Ching ex Y.X.Lin) S.E.Fawc. & A.R.Sm.

References
  1. Hassler, Michael (2004–2022), "Abacopteris", World Ferns: Synonymic Checklist and Distribution of Ferns and Lycophytes of the World, retrieved 2022-06-04
  2. Fawcett, S. & Smith, A.R. (2021), A Generic Classification of the Thelypteridaceae, Sida, Botanical Miscellany 59, Fort Worth: Botanical Research Institute of Texas Press
  3. Fawcett, Susan; Smith, Alan R.; Sundue, Michael; Burleigh, J. Gordon; Sessa, Emily B.; Kuo, Li-Yaung; Chen, Cheng-Wei; Testo, Weston L.; Kessler, Michael & Barrington, David S. (2021), "A Global Phylogenomic Study of the Thelypteridaceae" (PDF), Systematic Botany, 46 (4): 891–915, doi:10.1600/036364421X16370109698650, S2CID 245512861, retrieved 2022-06-04


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