Regnellidium
| Regnellidium | |
|---|---|
| |
| Scientific classification Edit this classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Salviniales |
| Family: | Marsileaceae |
| Genus: | Regnellidium Lindm. |
| Type species | |
| Regnellidium diphyllum | |
| Species | |
| |
Regnellidium is a monotypic genus of ferns of family Marsileaceae.[1]
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.
A fossil assigned to the species Regnellidium upatoiensis has been found in Cretaceous deposits of the eastern United States.[2]
The genus name of Regnellidium is in honour of Anders Fredrik Regnell (1807–1884), a Swedish physician and botanist.[3] It was first described and published in Ark. Bot. Vol.3 (Issue 6) on page 2 in 1904.[1]
References
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Other sources
[edit | edit source]- Mabberley, D. J. (1997). The Plant-Book. Cambridge University Press.
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