Haloragaceae
Slender watermilfoil
Myriophyllum tenellum
- Family
- Haloragaceae
- Genus
- Myriophyllum
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Common names
By language (1)
- English
- Slender watermilfoil
Synonyms
- Myriophyllum nudum Bach.Pyl. ex DC.
Flowers
- In flower
- July to September (from 11 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Lower 48 states: native, St. Pierre and Miquelon: native
Photos
FlowerPhoto: Rose Zappa, CC BY 4.0, from iNaturalist 
FlowerPhoto: Quinten Wiegersma, CC BY 4.0, from iNaturalist 
LeavesPhoto: Norma Malinowski, CC BY 4.0, from iNaturalist 
LeavesPhoto: Norma Malinowski, CC BY 4.0, from iNaturalist 
Photo: Bonnie Semmling, CC BY 4.0, from iNaturalist 
Photo: Zihao Wang, CC BY 4.0, from iNaturalist 
Photo: agbelliveau, CC0, from iNaturalist 
Photo: Derek, CC BY 4.0, from iNaturalist 
Photo: Quinten Wiegersma, CC BY 4.0, from iNaturalist 
Photo: Henry "Nick" Robertson, CC BY-SA 4.0, from iNaturalist 
Photo: Quinten Wiegersma, CC BY 4.0, from iNaturalist 
Photo: Allan Harris, CC0, from iNaturalist
More in Myriophyllum
- Eurasian watermilfoilMyriophyllum spicatumHaloragaceae
- Whorl-leaf watermilfoilMyriophyllum verticillatumHaloragaceae
- Alternateflower watermilfoilMyriophyllum alterniflorumHaloragaceae
- Parrot feather watermilfoilMyriophyllum aquaticumHaloragaceae
- Twoleaf watermilfoilMyriophyllum heterophyllumHaloragaceae
- Northern watermilfoilMyriophyllum sibiricumHaloragaceae
- Western watermilfoilMyriophyllum hippuroidesHaloragaceae
- Myriophyllum mattogrossensisHaloragaceae
- Cutleaf watermilfoilMyriophyllum pinnatumHaloragaceae
- Myriophyllum simulansHaloragaceae
- Russian water-milfoilMyriophyllum ussurienseHaloragaceae
- Low watermilfoilMyriophyllum humileHaloragaceae
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.