Nymphaea alba subsp. occidentalis
| Nymphaea alba subsp. occidentalis | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Species: | |
| Subspecies: | N. a. subsp. occidentalis
|
| Trinomial name | |
| Nymphaea alba subsp. occidentalis | |
| Synonyms[1] | |
| |
Nymphaea alba subsp. occidentalis is a subspecies of Nymphaea alba native to western and northern Europe.[1]
Description
Vegetative characteristics
Nymphaea alba subsp. occidentalis is an aquatic, rhizomatous, perennial plant.[2] The relatively small leaf[3] is 9–13 cm long.[4]
Generative characteristics
The relatively small,[2] 5–8(–12) cm wide flowers[4] do not open widely.[3][4][5] Stamens are absent towards the upper end of the ovary. The gynoecium consists of 8–15 carpels.[4]
Taxonomy
It was first described as Nymphaea alba var. occidentalis Ostenf. by Carl Hansen Ostenfeld in 1912. It was elevated to the rank of the subspecies Nymphaea alba subsp. occidentalis (Ostenf.) Hyl. published by Nils Hylander in 1945.[1] Some sources treat it as a synonym of Nymphaea alba,[6][7][8][9][10] but others accept it as a subspecies.[11][12][13][1][14][15] Within the subgenus Nymphaea subg. Nymphaea , it is placed in the section Nymphaea sect. Nymphaea.[7]
Etymology
The subspecific epithet occidentalis means western.[16]
Ecology
It occurs in small, nutrient poor aquatic habitats[4] in ponds,[3] marsh pools, small lakes,[12] and sheltered bays of larger lakes.[17]
Distribution
It is native to Belgium, Denmark, Finland, France, the United Kingdom, Ireland, Norway, and Sweden.[1]
Conservation
It is very rare.[2] In Sweden, it is classified as vulnerable (VU).[18][12] In the United Kingdom, it is of national conservation concern.[19]
References
- ^ a b c d e f Nymphaea alba subsp. occidentalis (Ostenf.) Hyl. (n.d.). Plants of the World Online. Retrieved June 23, 2025, from https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77251491-1
- ^ a b c Nymphaea alba subsp. occidentalis (Ostenf.) Hyl., a White Water-lily. (n.d.). Botanical Society of Britain & Ireland. Retrieved June 23, 2025, from https://fermanagh.bsbi.org/nymphaea-alba-subsp-occidentalis-hyl
- ^ a b c Ervik, F. (2024, November 26). Smånøkkerose. Store Norske Leksikon. Retrieved June 23, 2025, from https://snl.no/sm%C3%A5n%C3%B8kkerose
- ^ a b c d e Schou, J. C., Moeslund, B., Weyer, K. v. d., Wiegleb, G., Lansdown, R. V., Holm, P., Baastrup-Spohr, L., Sand-Jensen, K. (2023). Aquatic Plants of Northern and Central Europe Including Britain and Ireland. pp. 62, 65. United States: Princeton University Press.
- ^ Mériaux, J. L. (2003). Guide pratique de détermination des plantes aquatiques à l'état végétatif du Bassin Artois-Picardie. p. 25. Agence de l'eau Artois-Picardie.
- ^ Nymphaea alba L., 1753 - Nymphéa blanc, Nénuphar blanc, Lys des étangs. (n.d.). Inventaire National Du Patrimoine Naturel. Retrieved June 23, 2025, from https://inpn.mnhn.fr/espece/cd_nom/109750/tab/taxo
- ^ a b USDA, Agricultural Research Service, National Plant Germplasm System. 2025. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=415688. Accessed 23 June 2025.
- ^ Nymphaea alba subsp. occidentalis (Ostenf.) Hyl. (n.d.-b). GBIF | Global Biodiversity Information Facility. Retrieved June 23, 2025, from https://www.gbif.org/species/6712980
- ^ Nymphaea alba L. (n.d.). Catalogue of Life. Retrieved June 23, 2025, from https://www.catalogueoflife.org/data/taxon/48696
- ^ Nymphaea alba. (n.d.). Euro+Med-Plantbase. Retrieved June 23, 2025, from https://europlusmed.org/cdm_dataportal/taxon/8f1d60b9-607d-47ef-b4dd-209dc1995ee0/synonymy?highlight=fcf859c0-306f-4aa0-932f-c021fc08e9c4#fcf859c0-306f-4aa0-932f-c021fc08e9c4
- ^ Nymphaea alba subsp. occidentalis (Ostenf.) Hyl. (n.d.-d). World Flora Online. Retrieved June 23, 2025, from https://stage.worldfloraonline.org/taxon/wfo-0001427180;jsessionid=8B6DA02E462CEC096002F1B4BBC8FEC4
- ^ a b c Atlantnäckros Nymphaea alba subsp. occidentalis (Ostenf.) Hyl. (n.d.). SLU Artdatabanken. Retrieved June 23, 2025, from https://artfakta.se/taxa/1899/rodlistning
- ^ Nymphaea alba subsp. occidentalis (Ostenf.) Hyl. (n.d.-c). NBN Atlas. Retrieved June 23, 2025, from https://species.nbnatlas.org/species/NHMSYS0000461113
- ^ Nymphaea alba subsp. occidentalis. (n.d.). EPPO Global Database. Retrieved June 23, 2025, from https://gd.eppo.int/taxon/NYMAO
- ^ Paul R Green, Irish Vascular Plant Data - Paul Green, National Biodiversity Data Centre, Ireland, Nymphaea alba subsp. occidentalis, accessed 23 June 2025, from https://maps.biodiversityireland.ie/Dataset/178/Species/43519
- ^ Eckel, P. M. (n.d.). A Grammatical Dictionary of Botanical Latin. Missouri Botanical Garden. Retrieved June 23, 2025, from https://www.mobot.org/mobot/latindict/keyDetail.aspx?keyWord=west
- ^ Mountford, O., Clarke, S., Gowing, D., Rothero, E., & Wallace, H. (2018). Meadows and more: a botanical journal of five days on the Uists, Benbecula and Eriskay. Hebridean Naturalist, 18, 72-88.
- ^ ArtDatabanken 2015. Rödlistade arter i Sverige 2015. ArtDatabanken SLU, Uppsala
- ^ Amphlett, A. (2013, May). The Flora of the Cairngorms National Park A Rare Plant Register. Botanical Society of the British Isles.