Nuphar × rubrodisca

Nuphar × rubrodisca is a species of rhizomatous aquatic plant native to Canada and the USA. It is a natural hybrid of Nuphar variegata and Nuphar microphylla.[1]

The parent species of the natural hybrid Nuphar × rubrodisca Morong
Nuphar microphylla (Pers.) Fernald
Nuphar variegata Engelm. ex Durand

Nuphar × rubrodisca
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Order: Nymphaeales
Family: Nymphaeaceae
Genus: Nuphar
Species:
N. × rubrodisca
Binomial name
Nuphar × rubrodisca
Nuphar × rubrodisca occurs in Canada and the USA[1]
Synonyms[1]
List
  • Castalia × rubrodisca (Morong) Greene
  • Nuphar lutea subsp. rubrodisca (Morong) Hellq. & Wiersema
  • Nymphaea × rubrodisca (Morong) Greene
  • Nymphozanthus × rubrodiscus (Morong) Fernald
  • Nuphar advena var. hybrida Peck
  • Nuphar × hybrida (Peck) Bergmans
  • Nymphaea × fletcheri G.Lawson
  • Nymphaea × hybrida (Peck) Peck

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.[2]

Generative characteristics

The red stigmatic disk has 8-15 stigmatic rays.[3]

Reproduction

Vegetative reproduction

It can reproduce vegetatively through rhizome fragments.[4]

Generative reproduction

It can be sterile or fertile.[2] The fertility rates are much lower than those of the parental species.[4]

Taxonomy

Publication

It was first described by Thomas Morong in 1886.[1]

Natural hybridisation

Hybridisation events of both parental species are believed to have occurred many times independently from each other.[4]

Ecology

Habitat

It occurs in streams, tidal waters, ponds, and lakes at elevations of 0–400 m above sea level.[2] It occurs almost exclusively within the overlapping ranges of the parental species.[4]

References
  1. "Nuphar × rubrodisca Morong". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 5 May 2024.
  2. 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
  3. Nuphar X rubrodisca (Intermediate Pond-lily): Minnesota Wildflowers. (n.d.). Retrieved May 5, 2024, from https://www.minnesotawildflowers.info/flower/intermediate-pond-lily
  4. 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.
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