Regnellidium
| Regnellidium | |
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| File:Regnellidium diphyllum.jpg | |
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Regnellidium
Lindm.
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| Species | |
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Regnellidium diphyllum Lindm. |
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Regnellidium is a monotypic genus of ferns of family Marsileaceae.
The single living species, Regnellidium diphyllum, the two-leaf water fern, is native to southeastern Brazil and adjacent regions of Argentina. It resembles its relatives from the genus Marsilea, but has 2-lobed leaves (rather than 4). This fern is sometimes grown in aquaria. It is the only non-flowering plant that produces latex.
A fossil assigned to the species Regnellidium upatoiensis has been found in Cretaceous deposits of the eastern United States.
References
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- Mabberley, D. J. (1997). The Plant-Book. Cambridge University Press.
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