Lycopus asper Greene
rough water horehound (rough bugleweed)
Lamiaceae (Mint family)

Introduction to Vascular Plants

Photograph

© Jamie Fenneman     (Photo ID #19712)


Map

E-Flora BC Static Map

Distribution of Lycopus asper
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from thick rhizome that is tuber-like near tip; stems erect, 20-80 cm tall, stiff, stout, simple or branched, 4-angled, spreading short-hairy.
Leaves:
Opposite, usually ascending, lanceolate to narrowly elliptic, 2-10 cm long, 0.6-3.5 cm wide, narrowed to a rounded base, usually unstalked, glabrous or fine-hairy, margins coarsely but evenly toothed; uppermost leaves gradually to scarcely reduced.
Flowers:
Inflorescence of many head-like, axillary flower clusters; corollas tubular, 4-lobed, white, 3-5 mm long, slightly surpassing the calyces; calyx teeth 5, awl-like, pointed to short-awned.
Fruits:
Nutlets, 4 clustered together, 1.5-2 mm long, 1.4-1.8 mm wide, 3-angled, corky-thickened on edges, flat and often minutely toothed at the top.

SourceThe 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.

USDA Species Characteristics

Blooming Period:
Mid Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Summer to Fall
Source:  The USDA

Ecology

Ecological Framework for Lycopus asper

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)
590 485 626
Slope Gradient (%)
2 1 5

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

143 100 186
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 5 8
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
5
Modal BEC Zone Class
IDF

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

BG(1), IDF(2), PP(1), SBS(1)

Habitat and Range

Marshes, streams and lake margins in the steppe and montane zones; infrequent in C and S BC east of the Coast-Cascade Mountains; N to AK, E to ON, and S to IA, CO and CA

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Lycopus lucidus auct. non Turcz. ex Benth. p.p.
Lycopus lucidus subsp. americanus (A. Gray) Hultén
Lycopus lucidus var. americanus A. Gray