Lycopus uniflorus

Northern Water Horehound

Erect, scentless. Stem square, unbranched, with fine hairs. Leaves lance-shaped, with coarse teeth, opposite, sessile, all about the same size. Flowers white or pale pink, small, stalkless, numerous in whorls clustered at leaf axils. Flower 2-lipped; lower lip 3-lobed, hairy inside, 2 stamens, ovary with 4 lobes. Grows in wet places, lake edges, streambanks, riverbanks, bogs, at low to mid-elevations. Flowers smaller and not as dense as Mentha arvensis.

  • Rarity: Uncommon
  • Flowering Time: Late Summer
  • Life Cycle: Perennial
  • Height: 4--20 inches
  • Habitat: Meadow, Bog/Fen/Wetland, Moist Riverbanks
  • Found In: Olympic Np, Mt. Rainier Np, Wallowas, West Gorge, N Cascades Np
  • Native: Yes

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