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Montana Field Guide

Montana Field Guides

Michaux's Wormwood - Artemisia michauxiana


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

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General Description
Perennial from a much-branched caudex. Stems simple or branched, ascending to erect, 20–70 cm, glabrous or glandular. Leaves cauline, petiolate, aromatic; blades glabrous above, tomentose beneath, 5–25 mm long, obovate, twice divided; ultimate segments linear-lanceolate, up to 1 mm wide. Inflorescence narrow, racemose; heads erect. Involucre hemispheric, 2.5–3.5 mm high; phyllaries green to brown, glabrous to glandular; receptacle glabrous. Disk flowers 25 to 50, perfect and female, glandular; corolla 1.5–2 mm long; yellow to red. Achenes glabrous, ca. 0.5 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC, AB south to CA, NV, UT and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 14

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Stony soil of fellfields, outcrops, talus; upper montane to alpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Michaux's Wormwood — Artemisia michauxiana.  Montana Field Guide.  .  Retrieved on , from