Lamiaceae

American water horehound

Lycopus americanus Muhl. ex W.P.C.Barton

Family: Lamiaceae
Genus: Lycopus

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American water horehound (Lycopus americanus) — FlowerPhoto: Mary Krieger, CC BY 4.0, from iNaturalist

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Common names

By language (3)

English: American water horehound
Persian: لیکپوس امریکنوس
Russian: Зюзник американский

Synonyms

Lycopus lucidus subsp. americanus (Muhl. ex W.P.C.Barton) Hultén
Lycopus lucidus var. americanus (Muhl. ex W.P.C.Barton) A.Gray
Phytosalpinx americana (Muhl. ex W.P.C.Barton) Lunell

Flowers

In flower: July to August (from 404 flowering iNaturalist observations worldwide)
Flower colour: white (USDA PLANTS Database)

Characteristics

Growth habit: Forb/herb
Lifespan: Perennial
In the US and Canada: Canada: native, Lower 48 states: native

Photos

FlowerPhoto: Mary Krieger, CC BY 4.0, from iNaturalist
FlowerPhoto: Douglas Goldman, CC BY-SA 4.0, from iNaturalist
FlowerPhoto: Adam J. Searcy, CC BY 4.0, from iNaturalist
FlowerPhoto: Sandy Wolkenberg, CC BY 4.0, from iNaturalist
LeavesPhoto: Nathan Aaron, CC BY 4.0, from iNaturalist
Photo: Ayotte, Gilles, 1948-, CC BY-SA 4.0, from Wikimedia Commons
Photo: Marc-Aurèle Vallée, CC0, from iNaturalist
Photo: Sam Kieschnick, CC BY 4.0, from iNaturalist
Photo: Tom Norton, CC BY 4.0, from iNaturalist
Photo: Étienne Léveillé-Bourret, CC BY 4.0, from iNaturalist
Photo: Mary Krieger, CC BY 4.0, from iNaturalist
Photo: crothfels, CC BY 4.0, from iNaturalist

More in Lycopus

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.