Regnellidium
From Wikipedia, the free encyclopedia
Regnellidium | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Scientific classification | ||||||||||||
|
||||||||||||
Species | ||||||||||||
Regnellidium diphyllum Lindm. |
Regnellidium is a monotypic genus of ferns of family Marsileaceae.
The single living species, Regnellidium diphyllum, Two-leaf Water Fern, is native to South Eastern 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.
[edit] References
- Lupia, R., H. Schneider, G. M. Moeser, K. M. Pryer, and P. R. Crane. (2000). "Marsileaceae Sporocarps and Spores from the Late Cretaceous of Georgia, U.S.A.". International Journal of Plant Sciences 161:975–988.
- Mabberley, D. J. (1997). The Plant-Book. Cambridge University Press.