Poaceae
Water foxtail
Alopecurus geniculatus
- Family
- Poaceae
- Genus
- Alopecurus
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Common names
By language (25)
- Arabic
- ثعلبية ركبية
- arz
- ثعلبيه ركبيه
- Belarusian
- Лісахвост каленчаты
- Bulgarian
- Коленчата лисича опашка
- Chinese
- 沼澤狐尾草, 狐尾看麦娘
- Czech
- Psárka kolénkatá
- Danish
- Knæbøjet Rævehale
- Dutch
- Geknikte vossenstaart
- English
- Water foxtail, Marsh foxtail
- Estonian
- Põlvjas rebasesaba
- Finnish
- Polvipuntarpää
- French
- Vulpin genouillé
- German
- Knick-Fuchsschwanzgras, Geknieter Fuchsschwanz, Knick-Fuchsschwanz
- hsb
- Stawacy liščak
- Icelandic
- Knjáliðagras
- Latvian
- Liektā lapsaste
- Lithuanian
- Nariuotasis pašiaušėlis
- Norwegian Bokmål
- Knereverumpe
- Polish
- Wyczyniec kolankowy
- Romanian
- Coada vulpii, Coada-vulpii
- Russian
- Лисохвост коленчатый
- Slovenian
- Kolenčasti lisičji rep
- Swedish
- Kärrkavle
- Ukrainian
- Китник колінчастий
- Welsh
- Cynffonwellt elinog
Synonyms
- Alopecurus aristulosus Desv.
- Alopecurus australis Nees
- Alopecurus bulbosus With.
- Alopecurus geniculatus f. normanii Neuman
- Alopecurus geniculatus var. aquaticus Schltdl.
- Alopecurus geniculatus var. bulbosus Gray
- Alopecurus geniculatus var. geniculatus
- Alopecurus geniculatus var. patagonicus Parodi
- Alopecurus geniculatus var. pumila Vasey
- Alopecurus geniculatus var. salinus Blytt
- Alopecurus geniculatus var. strictus Andersson
- Alopecurus geniculatus var. vinealis Neilr.
- Alopecurus geniculatus var. virens Peterm.
- Alopecurus geniculatus var. viridis Neilr.
- Alopecurus nothus R.Arndt
- Alopecurus pallescens Piper
- Alopecurus palustris Syme
- Alopecurus palustris subsp. geniculatus (L.) Syme
- Alopecurus subaristatus Pursh
- Tozzettia geniculata (L.) Bubani
Flowers
- In flower
- May to August (from 263 flowering iNaturalist observations worldwide)
- Flower colour
- green (USDA PLANTS Database)
Characteristics
- Growth habit
- Graminoid
- Lifespan
- Perennial
- In the US and Canada
- Alaska: introduced, Canada: introduced, Greenland: introduced, Lower 48 states: introduced, St. Pierre and Miquelon: introduced
Photos
FlowerPhoto: John Barkla, CC BY 4.0, from iNaturalist 
FlowerPhoto: Peter de Lange, CC0, from iNaturalist 
FlowerPhoto: Joe Dillon, CC BY 4.0, from iNaturalist 
FlowerPhoto: Joe Dillon, CC BY 4.0, from iNaturalist 
Photo: Rasbak, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Kian Hayles-Cotton, CC0, from iNaturalist 
Photo: Ivar Leidus, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Dorte Stokholm, CC BY 4.0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Andrés Romero Bravo, CC BY 4.0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons
More in Alopecurus
- Meadow foxtailAlopecurus pratensisPoaceae
- Orange foxtailAlopecurus aequalisPoaceae
- Slender meadow foxtailAlopecurus myosuroidesPoaceae
- Creeping meadow foxtailAlopecurus arundinaceusPoaceae
- Bulbous foxtailAlopecurus bulbosusPoaceae
- Carolina foxtailAlopecurus carolinianusPoaceae
- Rendle's meadow foxtailAlopecurus rendleiPoaceae
- Pacific foxtailAlopecurus saccatusPoaceae
- Alopecurus vaginatusPoaceae
- Cretan meadow foxtailAlopecurus creticusPoaceae
- Alopecurus gerardiiPoaceae
- Alpine meadow-foxtailAlopecurus magellanicusPoaceae
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.