Lycopus uniflorus Michx.
northern water horehound (northern bugleweed)
Lamiaceae (Mint family)

Introduction to Vascular Plants

Photograph

© Jamie Fenneman     (Photo ID #19713)

Map

E-Flora BC Static Map

Distribution of Lycopus uniflorus
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Species Information

General:
Perennial herb from a slender rhizome that is abruptly thick and tuber-like at tip; stems ascending to erect, 10-60 cm tall, simple or occasionally branched, finely to stiff-hairy, 4-angled.
Leaves:
Opposite, elliptic to lanceolate, 2-8 cm long, 0.6-3 cm wide, gradually narrowed at tip and base, glabrous or minutely rough-hairy, margins coarsely and irregularly toothed; usually short-stalked; uppermost leaves not much reduced.
Flowers:
Inflorescence of many head-like, axillary flower clusters; corollas tubular, 4-lobed, white or pinkish, 2.5-3.5 mm long, surpassing the calyces; calyx teeth 5, egg-shaped, soft, blunt to somewhat pointed at tips.
Fruits:
Nutlets, 4 clustered together, 1-2 mm long, 0.8-1.2 mm wide, 3-angled, corky-thickened at edges, somewhat flat and finely toothed at the top.

Source:  The Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Lycopus uniflorus

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
 Value / Class

Avg

Min

Max
Elevation (metres)
 372 0 1046
Slope Gradient (%)
 1 0 85

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

 209 62 225
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		6 4 8
Modal Nutrient Regime
Class
 D
# of field plots
 species was recorded in:
 104
Modal BEC Zone Class
 CWH

All BEC Zones (# of stations/zone) species was recorded in

 BWBS(1), CDF(12), CWH(70), ICH(14), IDF(1), MH(1), MS(1), SBS(3)

Habitat and Range

Marshes, fens, and stream and lake margins in the lowland and montane zones; frequent in SW BC, less frequent northward and eastward; N to AK, E to NF and S to NC, AR and CA.

Source:  The Illustrated Flora of British Columbia

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