Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Nymphoides peltata

Higher Taxonomy
Family: MenyanthaceaeView DescriptionDichotomous Key

Habit: Perennial herb [annual], +- aquatic, herbage glabrous; rhizomes thick. Leaf: simple or of 3 leaflets, generally alternate; stipules generally 0; petiole bases sheathing. Inflorescence: various. Flower: bisexual [unisexual], radial; sepals 5, united or not; corolla rotate to funnel-shaped, lobes 5, fringed or coarse-hairy marginally or adaxially or not; stamens 5, epipetalous, alternate corolla lobes, anthers sagittate; nectaries generally 5, at ovary base; pistil 1, ovary generally +- superior, chamber 1, stigma 2-lobed. Fruit: capsule [+- fleshy], valves 2--4. Seed: few to many, smooth, shiny.
Genera In Family: 5 genera, +- 70 species: worldwide.
eFlora Treatment Author: Robert F. Thorne, C. Barre Hellquist & William J. Stone
Scientific Editor: Thomas J. Rosatti.
Genus: NymphoidesView Description 

Leaf: simple, submersed or floating, deeply cordate, generally alternate, those on flowering stems generally opposite; petioles > blades. Inflorescence: +- umbel, in axils of petioles near top of long, petiole-like flower stem, often with clusters of tuberous roots. Flower: corolla rotate, white or yellow, lobes with a glandular appendage near base; filaments < to > style; stigma persistent, 2-lobed. Fruit: irregularly dehiscent.
Species In Genus: +- 50 species: North America, South America, Eurasia, Africa, Australia. Etymology: (Greek: Nymphaea-like, from resemblance of leaves to those of water lily) Note: Sometimes in Gentianaceae, but plants differ in their +- aquatic habitats, generally alternate, petioled leaves, and several other ways.

Nymphoides peltata (S.G. Gmel.) Kuntze
Habit: Heterostylous. Stem: < 160 cm, creeping; flowering stems floating. Leaf: 3--10 cm wide; margin wavy or entire. Inflorescence: flowers 2--5. Flower: pedicel 3--10 cm, +- thick; calyx lobes lance-oblong; corolla 30--40 mm diam, yellow, lobe margins wide, thin, wavy, fringed-ciliate; styles < filaments on some pls, > filaments on others. Seed: ovate, flat, coarsely ciliate. Chromosomes: 2n=54.
Ecology: Still water, slow-moving rivers; Elevation: +- 1100 m. Bioregional Distribution: n SNH (Trout Lake, El Dorado Co.), CCo (reported); Distribution Outside California: Washington, northeastern United States, Arkansas, Arizona; native to Eurasia, Mediterranean. Flowering Time: Jun--Sep Note: Cult in aquatic gardens; listed as invasive in many states.
eFlora Treatment Author: Robert F. Thorne, C. Barre Hellquist & William J. Stone
Jepson Online Interchange

Previous taxon: Nymphoides
Next taxon: Molluginaceae

Name Search


Citation for this treatment: Robert F. Thorne, C. Barre Hellquist & William J. Stone 2016. Nymphoides peltata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 30, 2016.

Geographic subdivisions for Nymphoides peltata:
n SNH (Trout Lake, El Dorado Co.), CCo (reported);
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.