Regnellidium

Short description: Genus of ferns

Regnellidium

Scientific classification
Kingdom:  | Plantae
Clade:  | Tracheophytes
Division:  | Polypodiophyta
Class:  | Polypodiopsida
Order:  | Salviniales
Family:  | Marsileaceae
Genus:  | Regnellidium
Lindm.
Species

Regnellidium diphyllum Lindm.
†Regnellidium upatoiensis

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

1. ↑ 1.0 1.1 "Regnellidium Lindm. | Plants of the World Online | Kew Science" (in en). https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:295537-2.
2. ↑ Lupia, R.; Schneider, H.; Moeser, G. M.; Pryer, K. M.; Crane, P. R. (2000). "Marsileaceae Sporocarps and Spores from the Late Cretaceous of Georgia, U.S.A". International Journal of Plant Sciences 161 (6): 975–988. doi:10.1086/317567.
3. ↑ Burkhardt, Lotte (2018) (in German) (pdf). Verzeichnis eponymischer Pflanzennamen – Erweiterte Edition. Berlin: Botanic Garden and Botanical Museum, Freie Universität Berlin. doi:10.3372/epolist2018. ISBN 978-3-946292-26-5. https://doi.org/10.3372/epolist2018. Retrieved 1 January 2021.

## Other sources

* Mabberley, D. J. (1997). The Plant-Book. Cambridge University Press.

Wikidata ☰ Q3374427 entry

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