Nuphar lutea ssp. polysepala
Nuphar lutea (L.) Sm. ssp. polysepala (Engelm.) E.O. Beal
Rocky Mountain Pond Lily, Pond Lily
Nymphaeaceae (Water-Lily Family)
Synonym(s): Nuphar polysepala, Nymphaea polysepala, Nymphozanthus polysepalus
USDA Symbol: NULUP
Pond-lily is a large-leaved, aquatic perennial with bright yellow, waxy blossoms from 3-5 in. in diameter. The leathery, round to oval leaves may be 4-12 in. long. They are usually floating but are sometimes partially or wholly submersed.
Native Americans ground the seeds for flour and also roasted them as popcorn. This aquatic plant (and some others, including rice) gives off alcohol instead of carbon dioxide as it takes in oxygen. This species is also known as Wakas.
From the Image Gallery
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug
DistributionUSA: AK , AZ , CA , CO , ID , MT , NM , NV , OR , UT , WA , WY
Native Distribution: AK to n. CA, e. to Alt. & CO
Native Habitat: Ponds; shallow lakes; sluggish streams
Growing ConditionsLight Requirement: Sun
Soil Moisture: Wet
Soil Description: Shallow water.
BenefitUse Wildlife: Excellent cover for trout and other fish. Ducks eat the seeds.
Conspicuous Flowers: yes
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Santa Barbara Botanic Garden - Santa Barbara, CA
Native Seed Network - Corvallis, OR
Additional resourcesUSDA: Find Nuphar lutea ssp. polysepala in USDA Plants
FNA: Find Nuphar lutea ssp. polysepala in the Flora of North America (if available)
Google: Search Google for Nuphar lutea ssp. polysepala
MetadataRecord Modified: 2016-09-19
Research By: TWC Staff