Nymphaea sect. Chamaenymphaea is a section within the subgenus Nymphaea subg. Nymphaea of the genus NymphaeaUSDA, 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 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 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.AitonNaito, H., Kato, S., Shutoh, K., & Shiga, T. (2024). Morphological and phylogenetic analyses reveal the taxonomic distinctiveness between Nymphaea pygmaea and N. tetragona (Nymphaeaceae). Nymphaea tetragona
Distribution It occurs in North America, Asia, and Europe.
Fossil record The fossil species †Nymphaea minuta has been described as being very similar to Nymphaea pygmaeaComptes rendus hebdomadaires des séances de l'Académie des Sciences. p. 889. (1894). Frankreich: Gauthier-Villars. and Nymphaea tetragona.Revue générale de botanique. 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