Cystodium sorbifolium

Cystodium
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Polypodiopsida /
  Pteridopsida (disputed)
Order: Polypodiales
Family: Cystodiaceae
J.R.Croft 1986
Genus: Cystodium
J.Sm. 1841
Species: C. sorbifolium
Binomial name
Cystodium sorbifolium
(Sm.) J.Sm.
Synonyms

Cystodiopteris Rauschert 1982[1]

Cystodium is a fern genus in its own Cystodiaceae family.[2] It contains a single species: Cystodium sorbifolium (Sm.) J.Sm. 1841.[3] Because it looks like a small tree fern, it had previously been placed in the tree fern family Dicksoniaceae. Subsequent analysis had moved it to the Lindsaeaceae,[3] but the most recent phylogenetic studies have placed it in its own separate family, Cystodiaceae, with a sister relationship to the current Lindsaeaceae.[4]

Distribution

Cystodium is distributed through lowland rainforests from Borneo to New Guinea and nearby islands, as well as the Solomon Islands.[3]

References

  1. ↑ Cystodiopteris USDA-ARS Germplasm Resources Information Network (GRIN) 28 January 2010
  2. ↑ Christenhusz, Maarten; Xian-Chun Zhang & Harald Schneider (2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19 (18 Feb. 2011): 7–54.
  3. 1 2 3 Korall, Petra; Conant, David S.; Schneider, Harald; Ueda, Kunihiko; Nishida, Harufumi; Pryer, Kathleen M. (2006). "On the Phylogenetic Position of Cystodium: It's Not a Tree Fern – It's a Polypod!" (PDF). American Fern Journal. 96 (2): 45–53. doi:10.1640/0002-8444(2006)96[45:OTPPOC]2.0.CO;2.
  4. ↑ Lehtonen, Samuli; Tuomisto, Hanna; Rouhan, Germinal; Christenhusz, Maarten J. M. (2010). "Phylogenetics and classification of the pantropical fern family Lindsaeaceae". Botanical Journal of the Linnean Society. 163 (3): 305–359. doi:10.1111/j.1095-8339.2010.01063.x.


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