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

Stachys arvensis (L.) L.
field hedge-nettle (staggerweed)
Lamiaceae (Mint family)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Stachys arvensis
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Species Information

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General:
Annual herb from a taproot; stems ascending to erect, 10-30 cm tall, branched, stiff-hairy, 4-angled.
Leaves:
Opposite, egg-shaped, 1.5-2.5 cm long, tips blunt, bases rounded to slightly notched, margins toothed; stalks 1-2.5 cm long.
Flowers:
Inflorescence of 2- to 6-flowered clusters in the axils of leaf-like bracts (becoming smaller and unstalked above) forming a lax, interrupted, terminal spike; corollas pale purple, 6-7 mm long, tube 3-6 mm long, with a ring of hairs within; calyces tubular-bell-shaped, hairy, tube 2.5-4 mm long, upper part purple, teeth triangular egg-shaped to lanceolate.
Fruits:
Nutlets, 4 clustered together, egg-shaped, rounded at tip.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Waste places and cultivated areas in the lowland zone; rare in SW BC, known only from Vancouver and Victoria; introduced from Europe.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Stachys arvensis

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

Minimum

Average

Maximum

Elevation (metres) 956 1125 1295
Slope Gradient (%) 0 11 23
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
50 49 50
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 4 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
2
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: ICH(1), IDF(1)

Climate

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.

Taxonomic and Nomenclatural Links

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