Haloragaceae
Alternateflower watermilfoil
Myriophyllum alterniflorum
- Family
- Haloragaceae
- Genus
- Myriophyllum
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Common names
By language (21)
- Catalan
- Myriophylle à Fleurs Alternes
- Chinese
- 互花狐尾藻
- Corsican
- Myriophiyllum altemiflorum
- Czech
- Stolístek střídavokvětý
- Dutch
- Teer vederkruid
- English
- Alternateflower watermilfoil, Alternate water-milfoil, Alternate-flowered water milfoil, Alternate-flowered water-milfoil, Slender water milfoil, Slender water-milfoil
- Estonian
- Vahelduvaõiene vesikuusk
- Finnish
- Ruskoärviä
- French
- Myriophylle à fleurs alternes, Myriophylle à feuilles alternes
- German
- Wechselblütiges Tausendblatt, Armblütiges Tausendblatt, Myriophylle à Fleurs Alternes
- hsb
- Něžny stolistnik
- Icelandic
- Síkjamari
- kw
- Minfel dowr
- Lithuanian
- Pražangiažiedė plunksnalapė, Myriophylle à Fleurs Alternes
- Norwegian Bokmål
- Tusenblad
- Polish
- Wywłócznik skrętoległy
- Russian
- Уруть очерёдноцветковая
- Spanish
- Ovas de Rio
- Swedish
- Hårslinga, Myriophylle à Fleurs Alternes
- Ukrainian
- Водопериця черговоквіткова
- Welsh
- Myrdd-ddail blodau bob yn ail
Synonyms
- Myriophyllum alterniflorum var. americanum Pugsley
- Myriophyllum montanum Martrin-Donos
Flowers
- In flower
- April to May, July to August (from 11 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Perennial
- In the US and Canada
- Canada: native, Greenland: native, Lower 48 states: native, St. Pierre and Miquelon: native
Photos
FlowerPhoto: Alessia Guggisberg, CC BY 4.0, from iNaturalist 
FlowerPhoto: Allan Harris, CC0, from iNaturalist 
FlowerPhoto: Duarte Frade, CC BY 4.0, from iNaturalist 
Photo: Charlie Pavlisich, CC BY 4.0, from iNaturalist 
Photo: Ruppia2000, CC BY-SA 3.0, from Wikimedia Commons Photo: Daniel, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Norma Malinowski, CC BY 4.0, from iNaturalist 
Photo: Vengolis, CC BY-SA 4.0, from Wikimedia Commons Photo: sakalian, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Rob Foster, CC BY 4.0, from iNaturalist 
Photo: Vengolis, CC BY-SA 4.0, from Wikimedia Commons Photo: marianna.bellandi, CC BY-SA 4.0, from Pl@ntNet via GBIF
More in Myriophyllum
- Eurasian watermilfoilMyriophyllum spicatumHaloragaceae
- Whorl-leaf watermilfoilMyriophyllum verticillatumHaloragaceae
- 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
- Andean watermilfoilMyriophyllum quitenseHaloragaceae
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.