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

Artemisia ludoviciana Nutt.
western mugwort (white sagebrush)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #34078)

E-Flora BC Static Map
Distribution of Artemisia ludoviciana
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Species Information

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General:
Perennial aromatic herb from a rhizome; stems erect, simple with white matted hairs, 0.3-1.0 m tall.
Leaves:
Stem leaves numerous with dense, white, matted hairs on both sides or loosely woolly to green and glabrate above, lanceolate to oblanceolate or elliptic, entire to deeply lobed, the lobes sometimes again toothed or irregularly lobed, 3-9 cm long, 10-21 mm wide.
Flowers:
Heads disciform, numerous in a branched or narrow, spikelike inflorescence; involucres egg-shaped to bell-shaped, 2.5-4.5 mm tall; involucral bracts broadly lanceolate to egg-shaped with dense, white, matted hairs or sometimes glabrate; receptacles glabrous; female flowers 5-12; disk flowers 6-21.
Fruits:
Achenes glabrous.
Notes:
This extremely variable species is represented in BC by three varieties. These may be separated as follows:

1. Principal leaves mostly entire, sometimes with a few lobes................... var. ludoviciana

1. Principal leaves more or less deeply parted or divided.

2. Leaves merely lobed, seldom subpinnately cut............. var. latiloba Nutt.

2. Leaves bipinnately cut with the ultimate segments again divided.................. var. incompta (Nutt.) Cronq.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
White
Blooming Period:
Early Spring
Fruit/Seed characteristics:
Colour: White
Present from Summer to Fall
Source:  The USDA

Habitat / Range

Mesic to dry slopes, gravelly river terraces and open forests in the steppe, montane and subalpine zones; vars. latiloba and ludoviciana common in S BC, rare near the coast, var. incompta rare in SE BC, known recently only from Cherryville and Sage Creek; E to ON and S to IL, TX, NM, AZ, CA and NW MX.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Artemisia ludoviciana

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) 279 875 2000
Slope Gradient (%) 0 21 75
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
30 171 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 2 5
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
22
Modal BEC Zone Class
BG
All BEC Zones (# of stations/zone) species was recorded in: BG(7), ESSF(3), IDF(5), PP(5)

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.

Synonyms and Alternate Names

Artemisia candicans Rydb.
Artemisia ludoviciana var. latiloba Nutt.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References