''Nymphaea'' sect. ''Chamaenymphaea'' is a section within the subgenus ''Nymphaea'' subg. ''Nymphaea'' of the genus ''Nymphaea''
[USDA, Agricultural Research Service, National Plant Germplasm System. 2024. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland. URL: https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomygenus?type=section&id=18695. Accessed 3 December 2024.] native to North America,
Asia,
and Europe.
Description
Vegetative characteristics
Its species have small,
erect,
cylindric, unbranched rhizomes lacking stolons.
[Wiersema, J. H. (1996). ''Nymphaea tetragona'' and ''Nymphaea leibergii'' (Nymphaeaceae): two species of diminutive water-lilies in North America. Brittonia, 48, 520-531.] Both floating and submerged leaves are produced.
The obovate to oval,
glabrous, petiolate leaves
with an entire margin
have glabrous petioles
with two primary air canals.
Generative characteristics
The small, 3–7.5 cm wide,
[Borsch, T., Wiersema, J. H., Hellquist, C. B., Löhne, C., & Govers, K. (2014)]
Speciation in North American water lilies: evidence for the hybrid origin of the newly discovered Canadian endemic ''Nymphaea loriana'' sp. nov.(Nymphaeaceae) in a past contact zone.
Botany, 92(12), 867-882. white or rosy,
[Conard, Henry S. (1905). The waterlilies: a monograph of the genus ''Nymphaea'' (p. 167). Pub. by the Carnegie Institution of Washington. https://www.biodiversitylibrary.org/page/35045000] flowers have peduncles with 4 primary air canals.
The sepals are green. The 8–17 petals are white.
The filaments are widest above the middle of the filament.
The gynoecium consists of 5–12 carpels. The fruit bears smooth, ovoid, 2–3 mm long, and 1.5–2 mm wide seeds.
Taxonomy
It was first published as ''Nymphaea'' subsect. ''Chamaenymphaea'' Planch. by
Jules Émile Planchon
Jules Émile Planchon (21 March 1823 – 1 April 1888) was a French botanist born in Ganges, Hérault. He was a brother of Gustave Planchon who also studied medicinal plants.
Biography
After receiving his Doctorate of Science at the Universit ...
in 1853.
[''Nymphaea'' subsect. ''Chamaenymphaea'' Planch. (n.d.). International Plant Names Index. Retrieved December 4, 2024, from https://www.ipni.org/n/306974-2] It was then given a new status as ''Nymphaea'' sect. ''Chamaenymphaea'' (Planch.) Wiersema published by
John Harry Wiersema
John is a common English name and surname:
* John (given name)
* John (surname)
John may also refer to:
New Testament
Works
* Gospel of John, a title often shortened to John
* First Epistle of John, often shortened to 1 John
* Second Ep ...
in 1997.
[''Nymphaea'' sect. ''Chamaenymphaea'' (Planch.) Wiersema. (n.d.). International Plant Names Index. Retrieved December 3, 2024, from https://www.ipni.org/n/994069-1] It is placed in the subgenus
''Nymphaea'' subg. ''Nymphaea''.
[Borsch, T., Hilu, K. W., Wiersema, J. H., Löhne, C., Barthlott, W., & Wilde, V. (2007)]
Phylogeny of ''Nymphaea'' (Nymphaeaceae): evidence from substitutions and microstructural changes in the chloroplast trnT-trnF region.
International Journal of Plant Sciences, 168(5), 639-671.
Species
*''
Nymphaea leibergii''
*''
Nymphaea pygmaea'' (Salisb.) W.T.Aiton
[Naito, H., Kato, S., Shutoh, K., & Shiga, T. (2024)]
Morphological and phylogenetic analyses reveal the taxonomic distinctiveness between ''Nymphaea pygmaea'' and ''N. tetragona'' (Nymphaeaceae).
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*'' Nymphaea tetragona''
Distribution
It occurs in North America,
Fossil record
The fossil species †''Nymphaea minuta
''Nymphaea minuta'' is a fossil species in the family Nymphaeaceae from the Aquitanian of Manosque, Alpes-de-Haute-Provence, France.''Nymphaea minuta'' Saporta (n.d.). The International Fossil Plant Names Index (IFPNI). Retrieved March 3, 2025, ...
'' has been described as being very similar to ''Nymphaea pygmaea''[Comptes rendus hebdomadaires des séances de l'Académie des Sciences.](_blank)
p. 889. (1894). Frankreich: Gauthier-Villars.[Revue générale de botanique.](_blank)
p. 191. (1890). Frankreich: Libraire générale de le̓nseignement. It was speculated that it may represent an ancestral species of ''Nymphaea pygmaea''.[de Saporta, G. (1891)]
Recherches sur la végétation du niveau aquitanien de Manosque.
pp. 13–14. Librairie polytechnique.
References
{{Taxonbar, from=Q21378258
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Plant sections