Yellow lotus

Names and Synonyms

Common Names

• American lotus
• American nelumbo
• yellow lotus
• alligator buttons
• duck acorns
• great yellow lily
• rattle nut
• watering can
• yockernut

Scientific Names

Accepted name

Synonyms

• Cyamus flavicomus
• Cyamus mysticus
• Nelumbo pentapetala
• Nymphaea pentapetala
• Cyamus nelumbo
• Nelumbium codophyllum
• Nelumbium luteum
• Nelumbium reniforme
• Nelumbium pentapetalum
• Nelumbo nucifera subsp. lutea
• Nelumbium jamaicense
• Nelumbo nucifera var. lutea
• Cyamus luteus
• Cyamus pentapetalus
• Cyamus reniformis

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, Nelumbo lutea, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is categorized under the order Proteales. Finally, it is classified under the family Nelumbonaceae and the genus Nelumbo.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution across parts of North America. In Eastern Canada, its presence is noted within the province of Ontario. Moving into the North-Central United States, it can be found throughout Illinois and Iowa. The species also extends its range into the state of Kansas. Finally, its habitat includes the northern reaches of the region in Minnesota.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Nelumbo lutea is defined by its specialized niche as a rooted aquatic perennial, thriving in shallow, stagnant, or slow-moving freshwater environments such as ponds, lakes, and marshes. It plays a critical role in its ecosystem by stabilizing soft sediments with its rhizomes and providing complex structural habitats for aquatic fauna and microflora. The plant is highly adapted to nutrient-rich, silty substrates where its extensive root systems can anchor firmly. In terms of its altitudinal distribution, this species exhibits a significant capacity for growth across varying terrains, characterized by an elevational range that reaches a mean of 2000 m AMSL. This broad vertical distribution allows it to occupy diverse montane and lowland aquatic landscapes, provided there is sufficient sunlight and consistent water levels to support its large, floating foliage and emergent flowers.

Elevational range mean:

2000 m AMSL

Life history

The life history of Nelumbo lutea is characterized by its nature as a perennial organism, allowing it to persist through multiple growing seasons via an extensive network of underwater rhizomes. These thick, starch-rich rhizomes serve as the primary storage organs, enabling the plant to survive periods of dormancy and regenerate annually. The lifecycle typically begins with the emergence of large, floating or emergent leaves from the sediment-anchored rhizomes as temperatures rise. During its active growth phase, the plant produces distinctive yellow flowers that transition from aquatic to emergent stages, facilitating pollination. Following successful fertilization, the plant develops large, globular seed heads that rise above the water surface. These structures eventually release numerous seeds into the aquatic environment, contributing to the dispersal and recruitment of new individuals, while the established perennial root system ensures the continued dominance of the colony in its freshwater habitat.

Lifecycle :

perennial

Morphology

The morphology of Nelumbo lutea is characterized by its growth form as a non-woody herb and forb, typically reaching an average plant height of 0.91 m. This species is primarily aquatic, though it can also exhibit semiaquatic or terrestrial tendencies within its habitat. Structurally, the plant is self-supporting rather than being a climber such as a liana or vine. It is classified as a terrestrial organism rather than an epiphyte, functioning as an independent species without parasitic tendencies.

Aquatic :

aquatic

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height mean:

0.91 m

Woodiness :

non-woody

Physiology

The physiology of Nelumbo lutea is characterized by a highly specialized adaptation to aquatic environments, governed primarily by a C3 photosynthetic pathway. This metabolic strategy involves the direct fixation of carbon dioxide via the enzyme RuBisCO during the Calvin cycle, which is typical for most temperate aquatic macrophytes. To support its rapid growth and large, floating lamina, the plant employs advanced anatomical adaptations, such as extensive aerenchyma tissue that facilitates the internal diffusion of gases, including oxygen and carbon dioxide, between the aerial leaves and the submerged rhizomes. This internal gas transport system is crucial for maintaining aerobic respiration in the roots despite the hypoxic conditions of the benthic substrate. Additionally, the plant manages transpiration and gas exchange through specialized stomata located exclusively on the upper surface of the leaves (epistomatous), allowing for efficient CO2 uptake from the atmosphere while minimizing water loss and avoiding the drowning of photosynthetic tissues.

Photosynthetic pathway :

C3

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Nelumbo lutea has 2 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Armepavine, Norarmepavine.

Armepavine

1. Journal of advanced research

Norarmepavine

1. Journal of advanced research