Hydrocharitaceae
Nodding waternymph
Najas flexilis
- Family
- Hydrocharitaceae
- Genus
- Najas
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Common names
By language (16)
- Arabic
- نجا مرنة
- arz
- نجا مرنه
- Belarusian
- Каўлінія гнуткая
- Chinese
- 纤稚虫
- English
- Nodding waternymph, Slender naiad
- Estonian
- Nõtke näkirohi
- Finnish
- Notkeanäkinruoho
- German
- Biegsames Nixkraut
- hsb
- Šwižna rěčnička
- Lithuanian
- Lankstusis plukenis
- Norwegian Bokmål
- Mykt havfrugras
- Norwegian Nynorsk
- Mjukt havfrugras
- Polish
- Jezierza giętka, Jezierza najcieńsza
- Russian
- Наяда гибкая
- Swedish
- Sjönajas
- Welsh
- Naiad ystwyth
Synonyms
- Caulinia flexilis Willd.
- Fluvialis flexilis (Willd.) Pers.
- Najas caespitosa (Maguire) Reveal
- Najas caespitosus (Maguire) Reveal
- Najas flexilis f. microcarpa (Nilsson) Neuman
- Najas flexilis subsp. caespitosa Maguire
- Najas flexilis var. congesta Farw.
- Najas flexilis var. microcarpa Nilsson
- Najas flexilis var. robusta Morong
Flowers
- Flower colour
- green (USDA PLANTS Database)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Alaska: native, Canada: native, Lower 48 states: native
Photos
FruitPhoto: Dustin Snider, CC BY 4.0, from iNaturalist 
Photo: Quinten Wiegersma, CC BY 4.0, from iNaturalist 
Photo: Mary Krieger, CC BY 4.0, from Wikimedia Commons 
Photo: Allan Harris, CC0, from Wikimedia Commons 
Photo: Randal, CC0, from iNaturalist 
Photo: Kallum McDonald, CC0, from iNaturalist 
Photo: Norma Malinowski, CC BY 4.0, from iNaturalist 
Photo: Camille Boucher, CC0, from iNaturalist 
Photo: Charlie Pavlisich, CC BY 4.0, from iNaturalist
More in Najas
- Holly-leaved naiadNajas marinaHydrocharitaceae
- Brittle naiadNajas minorHydrocharitaceae
- Ricefield waternymphNajas gramineaHydrocharitaceae
- Slender waternymphNajas gracillimaHydrocharitaceae
- Southern waternymphNajas guadalupensisHydrocharitaceae
- Najas indicaHydrocharitaceae
- Najas tenuissimaHydrocharitaceae
- Najas oguraensisHydrocharitaceae
- Thin-leaved naiadNajas tenuifoliaHydrocharitaceae
- Wright's waternymphNajas wrightianaHydrocharitaceae
- Najas ancistrocarpaHydrocharitaceae
- Needleleaf waternymphNajas filifoliaHydrocharitaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.