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Montana Field Guide

Montana Field Guides

Nuttall's Sunflower - Helianthus nuttallii


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 7

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General Description
Rhizomatous perennial with tuberous roots. Stems erect, simple or branched above, 60–200 cm. Herbage glabrate to scabrous or short-strigose, sometimes glaucous. Leaves opposite to mostly alternate; blades entire to serrate, narrowly lanceolate to lanceolate, 5–15 cm long. Involucres 12–22 mm across; phyllaries linear-lanceolate, long-acuminate, hispid to strigose, ciliate, 8–20 mm long. Ray ligules 15–30 mm long. Disk corollas 6–7 mm long. Achenes 3–5 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC to QC south to CA, AZ, NM, AR and MO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 29

(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
Wet meadows, thickets along streams, wetlands; plains, valleys, lower montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Nuttall's Sunflower — Helianthus nuttallii.  Montana Field Guide.  .  Retrieved on , from