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Montana Field Guide

Montana Field Guides

Spiny Goldenaster - Xanthisma spinulosum
Other Names:  Haplopappus spinulosus, Machaeranthera pinnatifida

Native Species

Global Rank: G5
State Rank: SNR

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

General Description
Stems ascending to erect, branched, 5–40 cm. Herbage tomentose, viscid. Leaf blades 1–4 cm long, deeply pinnately lobed; lobes remote, linear, spine-tipped, sometimes dentate. Inflorescence corymbiform with heads solitary on branch tips. Heads radiate; involucre hemispheric, 6–9 mm high; phyllaries in 5 or 6 series, tomentose, viscid; the outer green; the inner whitish. Rays 14 to 60, yellow; ligules 4–10 mm long. Disk flowers 30 to 150; corollas 4–6 mm long. Achenes ca. 2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety spinulosum.

Species Range
Montana Range


Range Comments
AB to MB south to CA, NM, TX, IA an d Mexico (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 90

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



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

Stony or sandy soil of grasslands, sagebrush steppe, roadsides; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX) .

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Rundquist, V.M. 1973. Avian ecology on stock ponds in two vegetational types in north-central Montana. Ph.D. Dissertation. Bozeman, MT: Montana State University. 112 p.
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Citation for data on this website:
Spiny Goldenaster — Xanthisma spinulosum.  Montana Field Guide.  .  Retrieved on , from