Nymphaea sect. Chamaenymphaea

Nymphaea sect. Chamaenymphaea
Nymphaea leibergii in its natural habitat
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Order:	Nymphaeales
Family:	Nymphaeaceae
Genus:	Nymphaea
Subgenus:	Nymphaea subg. Nymphaea
Section:	Nymphaea sect. Chamaenymphaea (Planch.) Wiersema
Type species
Nymphaea pygmaea (Salisb.) W.T.Aiton[1]
Species
See here.

Nymphaea sect. Chamaenymphaea is a section within the subgenus Nymphaea subg. Nymphaea of the genus Nymphaea[2][3][4] native to North America,[4][5] Asia,[5] and Europe.[3]

Description

Nymphaea leibergii floating leaves

Vegetative characteristics

Its species have small,[3] erect,[4][6] cylindric, unbranched rhizomes lacking stolons.[4] Both floating and submerged leaves are produced.[4] The obovate to oval,[7] glabrous, petiolate leaves[4] with an entire margin[4][7] have glabrous petioles[4] with two primary air canals.[7]

Generative characteristics

The small, 3–7.5 cm wide,[6] white or rosy,[7] flowers have peduncles with 4 primary air canals.[7] The sepals are green. The 8–17 petals are white.[4] The filaments are widest above the middle of the filament.[3] The gynoecium consists of 5–12 carpels. The fruit bears smooth, ovoid, 2–3 mm long, and 1.5–2 mm wide seeds.[4]

Taxonomy

It was first published as Nymphaea subsect. Chamaenymphaea Planch. by Jules Émile Planchon in 1853.[8] It was then given a new status as Nymphaea sect. Chamaenymphaea (Planch.) Wiersema published by John Harry Wiersema in 1997.[9] It is placed in the subgenus Nymphaea subg. Nymphaea.[3]

Species

• Nymphaea leibergii (Morong) Rydb.[4]
• Nymphaea pygmaea (Salisb.) W.T.Aiton[6][5]
• Nymphaea tetragona Georgi[4]

Distribution

It occurs in North America,[4][5] Asia,[5] and Europe.[3]

References

1. Ortgies, E. (1851). Die Familie der Nymphaeen. Neue Allgemeine Deutsche Garten- Und Blumenzeitung, 7(11), pp. 481–484.
2. 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.
3. 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.
4. Wiersema, J. H. (1996). Nymphaea tetragona and Nymphaea leibergii (Nymphaeaceae): two species of diminutive water-lilies in North America. Brittonia, 48, 520-531.
5. Naito, H., Kato, S., Shutoh, K., & Shiga, T. (2024). Morphological and phylogenetic analyses reveal the taxonomic distinctiveness between Nymphaea pygmaea and N. tetragona (Nymphaeaceae).
6. 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.
7. 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
8. Nymphaea subsect. Chamaenymphaea Planch. (n.d.). International Plant Names Index. Retrieved December 4, 2024, from https://www.ipni.org/n/306974-2
9. Nymphaea sect. Chamaenymphaea (Planch.) Wiersema. (n.d.). International Plant Names Index. Retrieved December 3, 2024, from https://www.ipni.org/n/994069-1