Page authors: Don Knoke, David Giblin
Artemisia ludoviciana
western mugwort, prairie sage
WTU specimens
Other herbaria
WTU images

Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.

Habitat: Meadows and open slopes, from the lowlands to the alpine.

Flowers: June-October

Origin: Native

Conservation Status: Not of concern

Description:
General:

Aromatic, rhizomatous perennial, 3-19 dm. tall, simple up to the inflorescence, white-woolly at least above.

Leaves:

Leaves 3-11 cm. long, lanceolate or lance-elliptic and entire to deeply lobed, the lobes sometimes toothed, up to 1 cm. wide excluding the lobes, white-woolly beneath and often above as well.

Flowers:

Inflorescence paniculate, ample or narrow; involucral bracts imbricate, dry, 2.5-4.5 mm. high; corollas all tubular, yellowish, fertile, the outer ones pistillate, 5-12, the inner perfect, 6-45; receptacle naked; pappus none.

Fruits:

Achenes glabrous.

Accepted Name:
Artemisia ludoviciana Nutt.
Publication: Gen. N. Amer. Pl. 2: 143. 1818.

Synonyms & Misapplications:
(none provided)
Infraspecies:
ssp. candicans – gray sagewort    Occurring east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Utah.
ssp. incompta – intermediate sagewort, mountain wormwood    Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Alberta, Montana, Wyoming, and Colorado.
ssp. lindleyana – Lindley's western mugwort, Lindley's prairie sage    Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; south-central British Columbia to Oregon, east to western Montana.
ssp. ludoviciana – western mugwort, Louisiana sagewort, silver wormwood    Occurring east of the Cascades crest and in the Columbia River Gorge in Washington; British Columbia to California, east across North America to the Atlantic Coast.
Additional Resources:

PNW Herbaria: Specimen records of Artemisia ludoviciana in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Artemisia ludoviciana checklist entry.

E-Flora BC: Artemisia ludoviciana atlas page.

CalPhotos: Artemisia ludoviciana photos.

USDA Plants: Artemisia ludoviciana information.

90 photographs:
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