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Montana Field Guide

Montana Field Guides

Curlycup Gumweed - Grindelia squarrosa

Native Species

Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

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General Description
Biennial to perennial, sometimes branched at the caudex. Stems erect, branched above, 10–70 cm. Herbage glabrous, glandular-punctate. Leaf blades linear-oblanceolate to oblong, 1–10 cm long; dentate with amber-colored, resin-tipped teeth. Involucres 5–12 mm high. Rays 24 to 40; ligules 5–12 mm long. Disk corollas 4–6 mm long. Achenes 1–4 mm long, top margin smooth; pappus awns 2 or 3 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout North America. Thought to be native to the Great Plains and Rocky Mountains and adventive elsewhere (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 181

(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
Margins of wetlands, streambanks, roadsides and other disturbed, vernally moist habitats; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View Online Publication
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    • Bartoli, Adriana, and Roberto D. Tortosa. 2012. "Revision of the North American Species of Grindelia (Asteraceae) 1". Annals of the Missouri Botanical Garden. 98 (4): 447-513.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Curlycup Gumweed — Grindelia squarrosa.  Montana Field Guide.  .  Retrieved on , from