''Nuphar'' × ''rubrodisca'' is a species of rhizomatous aquatic plant native to Canada and the USA. It is a natural hybrid of ''

Nuphar variegata ''Nuphar variegata'' (variegated pond-lily, bullhead pond-lily or yellow pond-lily) is rhizomatous, perennial, aquatic herb in the water lily family Nymphaeaceae native to much of Canada and the northernmost of the United States.''Nuphar variegat ...

'' and ''

Nuphar microphylla ''Nuphar microphylla'' is a perennial, rhizomatous, aquatic''Nuphar microphylla'' (Pers.) Fernald. (n.d.). Plants of the World Online. Retrieved January 30, 2025, from https://powo.science.kew.org/taxon/urn%3Alsid%3Aipni.org%3Anames%3A171086-2 he ...

''.

Description

Vegetative characteristics

''Nuphar'' × ''rubrodisca'' has 1–2.5 cm wide rhizomes. The petiolate leaves float on the water surface, or are more rarely submersed. The submerged leaves are orbicular.Morong, Thomas. (1886)
Revision of the North American Species of ''Nuphar''.
Botanical Gazette, 11(7), 164--169. https://doi.org/10.1086/325965

Generative characteristics

The red stigmatic disk has 8-15 stigmatic rays.''Nuphar'' X ''rubrodisca'' (Intermediate Pond-lily): Minnesota Wildflowers. (n.d.). Retrieved May 5, 2024, from https://www.minnesotawildflowers.info/flower/intermediate-pond-lily

Reproduction

Vegetative reproduction

It can reproduce vegetatively through rhizome fragments.

Generative reproduction

It can be sterile or fertile.''Nuphar rubrodisca'' in Flora of North America @ efloras.org. (n.d.-b). Retrieved May 5, 2024, from http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=233500818 The fertility rates are much lower than those of the parental species.

Taxonomy

Publication

It was first described by

Thomas Morong Rev. Thomas Morong (April 15, 1827 – April 26, 1894) was an American botany, botanist and clergyman. Biography Morong was born in Cahawba, Alabama to a Massachusetts-born father, Thomas Morong, and a Maryland-born mother Jane Travers. His fathe ...

in 1886.

Natural hybridisation

Hybridisation events of both parental species are believed to have occurred many times independently from each other.

Conservation

The

NatureServe conservation status The NatureServe conservation status system, maintained and presented by NatureServe in cooperation with the Natural Heritage Network, was developed in the United States in the 1980s by The Nature Conservancy (TNC) as a means for ranking or categor ...

is T4 Apparently Secure.

Ecology

Habitat

It occurs in streams, tidal waters, ponds, and lakes at elevations of 0–400 m above sea level. It occurs almost exclusively within the overlapping ranges of the parental species.Padgett, D. J., Les, D. H., & Crow, G. E. (1998)
Evidence for the hybrid origin of ''Nuphar'' × ''rubrodisca'' (Nymphaeaceae).
American Journal of Botany, 85(10), 1468-1476.

References

{{Taxonbar, from=Q17253171, from2=Q50916926, from3=Q123562689, from4=Q17253183 rubrodisca Flora of Northern America Flora of the United States Flora of Canada Plants described in 1886 Plant nothospecies