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Montana Field Guide

Montana Field Guides

Biennial Wormwood - Artemisia biennis

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Native Species

Global Rank: G5
State Rank: S4S5
C-value: 3


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Annual or biennial. Stems erect, simple or branched, 20–90 cm. Herbage glabrous, inodorous. Leaves basal and cauline, petiolate; blades oblanceolate, 2–15 cm long, 1 to 2 times pinnately divided into dentate, lanceolate segments. Inflorescence compound-spiciform, bracts linear or lobed. Involucre hemispheric, 2–3 mm high; phyllaries green to purple, glabrous; receptacle glabrous. Disk flowers 20 to 60, the outer female, glandular; corolla ca. 1 mm long; yellow. Achenes glabrous, up to 1 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
Throughout temperate North America; native to western states, adventive elsewhere (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 59

(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
Roadsides, fields, margins of wetlands; plains, valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Clark, D. 1991. The effect of fire on Yellowstone ecosystem seed banks. M.Sc. Thesis. Montana State University, Bozeman. 115 pp.
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Eggers, M.J.S. 2005. Riparian vegetation of the Montana Yellowstone and cattle grazing impacts thereon. M.Sc. Thesis. Montana State University, Bozeman, MT. 125 p.
    • Hildebrand, B. D. 1979. Habitat requirements of molting Canada Geese at Lima Reservoir, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 79 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
    • Sater, S. 2022. The insects of Sevenmile Creek, a pictorial guide to their diversity and ecology. Undergraduate Thesis. Helena, MT: Carroll College. 242 p.
  • Web Search Engines for Articles on "Biennial Wormwood"
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Citation for data on this website:
Biennial Wormwood — Artemisia biennis.  Montana Field Guide.  .  Retrieved on , from