sweet-scented water lily

Names and Synonyms

Common Names

• American water-lily
• American white water-lily
• fragrant water-lily
• fragrant white water-lily
• Fragrant Waterlily
• American white waterlily
• common water-lily

Scientific Names

Accepted name

Synonyms

• Leuconymphaea odorata
• Castalia odorata

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified within the phylum Streptophyta and the class Equisetopsida. Following its subclass Magnoliidae, it is placed in the order Nymphaeales and the family Nymphaeaceae. Ultimately, its taxonomic identity is defined by the genus Nymphaea.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical range that spans across both Europe and North America. In Middle Europe, its presence can be specifically identified within the borders of Germany. Moving across the Atlantic, the species is widely distributed throughout various regions of Canada. In Western Canada, it inhabits the provinces of British Columbia, Manitoba, and Saskatchewan. Finally, its range extends to the eastern part of the country in New Brunswick.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Nymphaea odorata is fundamentally defined by its existence within aquatic vegetation (vegetação aquática), where it functions as a key structural component of freshwater ecosystems. Thriving in lentic environments such as ponds, lakes, and slow-moving rivers, the plant occupies the interface between the benthic zone and the water's surface. Its specialized morphology allows it to anchor its rhizomes firmly in the nutrient-rich organic substrate of the bottom, while its expansive, floating leaves spread across the surface to maximize photosynthetic efficiency and light interception. By covering significant portions of the water's surface, Nymphaea odorata plays a crucial ecological role in regulating water temperature, reducing evaporation rates, and providing shaded microhabitats that shelter various aquatic organisms and stabilize the local microclimate.

Habitat :

Vegetação Aquática

Life history

The life history of Nymphaea odorata is characterized by its status as a perennial plant, allowing it to persist through multiple growing seasons by utilizing robust underground structures. The life cycle begins with the emergence of leaves and flower buds from rhizomes that are anchored in the aquatic sediment of ponds and slow-moving waters. During the active growing season, the plant produces floating, orbicular leaves and fragrant, multi-petaled flowers that rise to the water's surface to facilitate pollination. Following successful fertilization, the plant develops fruit that eventually matures and releases seeds into the water. As the seasonal cycle transitions, the above-ground foliage may die back, but the perennial rhizomes remain dormant in the substrate, storing the energy necessary to initiate new growth during the subsequent spring, ensuring the plant's long-term survival and establishment within its aquatic habitat.

Lifecycle :

perennial

Morphology

The morphology of Nymphaea odorata is characterized by its aquatic growth habit, functioning as a specialized aquatic herb rather than a terrestrial or climbing species. It is a self-supporting plant that does not exhibit any climbing tendencies, such as liana or vine behaviors, nor does it act as a climber. As a non-woody organism, it lacks lignified tissues, maintaining a soft, herbaceous structure throughout its life cycle. The plant is classified specifically as a forb, characterized by its distinct leaf and floral morphology adapted for life on the water's surface. Furthermore, Nymphaea odorata is a terrestrial-rooted aquatic plant that maintains an independent existence, functioning as an independent organism without any parasitic or epiphytic dependencies.

Aquatic :

aquatic

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiology of Nymphaea odorata is characterized by specialized adaptations to its aquatic environment, most notably its reliance on a C3 photosynthetic pathway. As a C3 plant, the initial fixation of carbon dioxide occurs via the enzyme RuBisCO within the mesophyll cells, leading to the direct formation of a three-carbon compound. To facilitate gas exchange while submerged, the plant utilizes extensive aerenchyma tissue—specialized spongy parenchyma with large intercellular air spaces—which allows for the internal diffusion of oxygen from the leaves to the roots and the transport of carbon dioxide required for photosynthesis. The leaves, or lily pads, exhibit distinct physiological differentiation between their upper and lower surfaces; the adaxial surface is coated with a thick, hydrophobic cuticle to prevent waterlogging and maintain gas exchange through stomata located exclusively on the top side of the leaf. This morphological arrangement, combined with the metabolic efficiency of the C3 pathway, supports the plant's energy requirements for rapid growth and the production of fragrant floral volatiles.

Photosynthetic pathway :

C3

Reproduction

The reproduction of Nymphaea odorata is characterized by a specific seasonal flowering cycle and highly consistent seed morphology. The flowering period typically begins in June and continues through August, although the timing can be variable depending on environmental conditions. During this reproductive phase, the plant produces seeds that exhibit remarkable uniformity in their physical dimensions. The seeds possess a mean, minimum, and maximum volume of exactly 5.6 mm³, indicating no variance in seed size within the recorded data. Similarly, the seed mass is extremely consistent, with both the mean and the extreme values (minimum and maximum) recorded at 0.005856 g. This precision in seed volume and mass suggests a highly standardized reproductive output for the species.

Flowering time :

Jun

Flowering time :

Aug

Seed mass mean:

0.005856 g

Seed volume max:

5.6 mm³

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Nymphaea odorata has 7 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Afzelin, Myricetin 3-O-alpha-L-rhamnopyranoside, Myricetin 3-O-beta-D-galactopyranoside, Myricitrin, Nymphaeoside A.

Afzelin

1. Journal of natural products
2. Oncology letters

Myricetin 3-O-alpha-L-rhamnopyranoside

1. Journal of natural products

Myricetin 3-O-beta-D-galactopyranoside

1. Journal of natural products

Myricitrin

1. Journal of natural products

Nymphaeoside A

1. Journal of natural products

Quercetin 3-O-alpha-L-rhamnopyranoside

1. Journal of natural products

kaempferol 3-O-alpha-L-rhamnopyranoside

1. Journal of natural products

Conditions

Nymphaea odorata has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include prostate cancer.

Prostate cancer

1. Oncology letters

Preparations

Nymphaea odorata has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include ethanol extract.

Ethanol extract

1. Journal of natural products