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Montana Field Guide

Montana Field Guides

Longleaf Wormwood - Artemisia longifolia


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

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General Description
Woody at the base from a branched caudex. Stems ascending or erect, usually simple, 12–80 cm, woody at the base. Herbage aromatic, tomentose; leaves gray above, whitish beneath. Leaves cauline, sessile to short-petiolate, linear-lanceolate, 2–10 cm long, entire. Inflorescence paniculate; heads erect to nodding; bracts linear. Involucre campanulate, 3–4 mm high; phyllaries green, tomentose; receptacle glabrous. Disk flowers 10 to 30, perfect and female, glandular; corolla 1–2.5 mm long; yellow or purple. Achenes glabrous, <1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC to MB south to ID, WY and NE (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 20

(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
Shale-derived soil of grasslands, coniferous woodlands; plains (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Longleaf Wormwood — Artemisia longifolia.  Montana Field Guide.  .  Retrieved on , from