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Nuphar polysepala Engelm.

Species

Angiosperms > Nymphaeales > Nymphaeaceae > Nuphar

Characteristics

Rhizomes 3-8 cm diam. Leaves mostly floating, occasionally emersed or submersed; petiole terete. Leaf blade abaxially and adaxially green, widely ovate, 10-40(-45) × 7-30 cm, ca. 1.2-1.5 times as long as wide, sinus 1/3-2/3 length of midrib, lobes divergent to overlapping; surfaces glabrous. Flowers 5-10 cm diam.; sepals mostly (6-)9(-12), abaxially green to adaxially yellow, sometimes red-tinged toward base; petals oblong, thick; anthers 3.5-9 mm, slightly shorter than filaments. Fruit green to yellow, cylindric to ovoid, 4-6(-9) × 3.5-6 cm, strongly ribbed, slightly constricted below stigmatic disk; stigmatic disk green, 20-35 mm diam., entire to crenate; stigmatic rays 8-26(-36), linear to lanceolate, terminating within 1(-1.5) mm from margin of disk. Seeds 3.5-5 mm. 2 n = 34.
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A waterlily. It keeps growing from year to year. It has a creeping spongy rootstock. It can be 3-8 cm across. The leaves are almost heart shaped with 2 deep lobes at the base. The leaves are dull green and thick. They float on water. They are 40 cm long and 25 cm wide. The leaf stalks can be 15 mm thick. The flowers are round and stand out of the water. They are 10-13 cm across. There are 7 to 9 dark yellow sepals. The petals are somewhat hidden. The stamens are in 5-7 rows. The seeds are edible.
Life form perennial
Growth form herb
Growth support aquatic
Foliage retention -
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 1.8
Root system creeping-root rhizome
Rooting depth (meter) 0.3
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It grows from Arctic to subtropical climates. It grows in ponds and slow flowing water. It suits hardiness zones 4-9.
More
Ponds, shallow lakes and slow-flowing rivers, from valleys to almost 3,000 metres in the mountains.
Light 6-8
Soil humidity 8-10
Soil texture 1-6
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 4-8

Usage

The seeds are roasted and eaten or ground into a mealy flour. The roots are boiled or roasted and eaten as a vegetable.
Uses forage medicinal
Edible roots seeds
Therapeutic use Analgesic (leaf), Antirheumatic (External) (leaf), Dermatological Aid (leaf), Tuberculosis Remedy (rhizome), Unspecified (rhizome), Analgesic (rhizome), Orthopedic Aid (rhizome), Respiratory Aid (rhizome), Other (rhizome), Gastrointestinal Aid (rhizome), Analgesic (root), Antirheumatic (Internal) (root), Blood Medicine (root), Heart Medicine (root), Tuberculosis Remedy (root), Venereal Aid (root), Antihemorrhagic (root), Gynecological Aid (root), Pulmonary Aid (root), Poison (root), Antirheumatic (External) (root), Dermatological Aid (root), Orthopedic Aid (root), Tuberculosis Remedy (tuber), Unspecified (unspecified), Gynecological Aid (unspecified), Toothache (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Nuphar polysepala unspecified picture

Distribution

Nuphar polysepala world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:1021676-2
WFO ID wfo-0001086864
COL ID 48474
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Nymphaea polysepala Nymphozanthus polysepalus Nuphar lutea subsp. polysepala Nuphar polysepala Nuphar polysepala var. picta
WorldFloraDB 2024