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Montana Field Guide

Montana Field Guides

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


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
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
Present
 


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).

Summary of Observations Submitted for Montana
Number of Observations: 21

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

References
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Citation for data on this website:
Spiny Goldenaster — Xanthisma spinulosum.  Montana Field Guide.  .  Retrieved on , from