Cystodium sorbifolium | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | Polypodiophyta |
Class: | Polypodiopsida |
Order: | Polypodiales |
Suborder: | Lindsaeineae |
Family: | Cystodiaceae J.R.Croft 1986 |
Genus: | Cystodium J.Sm. 1841 |
Species: | C. sorbifolium
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Binomial name | |
Cystodium sorbifolium (Sm.) J.Sm.
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Synonyms | |
Cystodiopteris Rauschert 1982[1] |
Cystodium is a fern in its own family, Cystodiaceae.[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] A fossil species of the genus Cystodium sorbifolioides is known from the Cenomanian aged Burmese amber in Myanmar.[5]
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