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Montana Field Guide

Montana Field Guides

Grassy Tarweed - Madia gracilis

Undetermined Origin

Global Rank: G5
State Rank: SNR

Agency Status


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General Description
Stems erect, simple, 10–100 cm. Herbage hirsute, stipitate-glandular above. Leaves linear to linear-oblanceolate, 1–11 cm long. Inflorescence of solitary or few, short-pedicelate heads in upper leaf axils. Involucre obovoid, 6–11 mm high; phyllaries ca. 8, stipitate-glandular. Rays 3 to 10; ligules 1–8 mm long. Disk flowers 2–16; corolla 2–5 mm long. Achenes compressed, ca. beakless, ca. 3 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
BC south to CA, NV, UT; perhaps introduced in Sanders County, MT (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).


  • 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?
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
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Citation for data on this website:
Grassy Tarweed — Madia gracilis.  Montana Field Guide.  .  Retrieved on , from