Nuphar oguraensis is a species of rhizomatous aquatic plant endemic to Japan.[1]
| Nuphar oguraensis | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nuphar |
| Species: | N. oguraensis
|
| Binomial name | |
| Nuphar oguraensis Miki[1]
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| Nuphar oguraensis is endemic to Japan[1] | |
| Synonyms[1] | |
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Description
editVegetative characteristics
editThe petiolate, green, ovate floating leaves are 7.5-11.5 cm long, and 6-9 cm wide. The petiole is 1-3 mm wide.[2] The petiole is semi-hollow.[3]
Generative characteristics
editThe flowers are 1.7-2.5 cm wide. The 2.5-3 cm long, and 1.5-2 cm wide fruit bears brown, 3.5-4 mm long, and 2.5 mm wide seeds.[2]
Reproduction
editGenerative reproduction
editFlowering occurs from June to October.[2]
Taxonomy
editPublication
editIt was first described by Shigeru Miki in 1934.[1]
Type specimen
editThe lectotype is an illustration of this species in the original publication by Shigeru Miki.[2][4]
Natural hybridisation
editIt has been speculated to be of hybrid origin involving Nuphar pumila and Nuphar japonica.[2]
Conservation
editIt is threatened by urbanisation and land development. It is regarded as a vulnerable species.[2]
Ecology
editHabitat
editIt occurs in rivers, lakes, ponds, and ditches.[2]
References
edit- ^ a b c d e "Nuphar oguraensis Miki". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 19 January 2024.
- ^ a b c d e f g Padgett, D. J. (2007). A MONOGRAPH OF NUPHAR (NYMPHAEACEAE). Rhodora, 109(937), 1–95. http://www.jstor.org/stable/23314744
- ^ Padgett, D. J. (2003). Phenetic studies in Nuphar Sm. (Nymphaeaceae): variation in sect. Nuphar. Plant Systematics and Evolution, 239(3/4), 187–197. http://www.jstor.org/stable/23645175
- ^ PADGETT, D. J. (1999). NOMENCLATURAL NOVELTIES IN NUPHAR (NYMPHAEACEAE). SIDA, Contributions to Botany, 18(3), 823–826. http://www.jstor.org/stable/41968902