E-Flora BC: Electronic Atlas of the Flora of British Columbia

Lycopus europaeus L.
European horehound (gypsywort)
Lamiaceae (Mint family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #10068)

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Distribution of Lycopus europaeus
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Species Information

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Perennial herb from a creeping rhizome; stems erect, unbranched or with ascending branches, 30-100 cm tall, 4-angled, somewhat hairy.
Opposite, egg-shaped to lanceolate, to 10 cm long, tips pointed, pinnately-lobed, the lobes triangular and pointed, the lower often lobed to the midrib; short-stalked.
Inflorescence of many-flowered, distant clusters, in axils of bracts similar to leaves; corollas tubular, 4-lobed, white with a few small purple dots on lower lip, about 3 mm long and wide; calyces egg-shaped to bell-shaped, the teeth 5, lanceolate, hairy, spine-tipped.
Nutlets, 4 clustered together, 4-angled, flat at the top.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet lakeshores, pond margins and riverbanks in the lowland zone; rare in SE BC (Salmo), common in SW BC, known only from the lower Fraser Valley; introduced from Europe.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Lycopus europaeus subsp. mollis (Kern.) Rothm. ex Skalick├┐
Lycopus europaeus var. mollis (Kern.) Briq.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References