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Montana Field Guide

Montana Field Guides

Oregon Sunshine - Eriophyllum lanatum
Other Names:  Common Woolly Sunflower


Global Rank: G5
State Rank: S4

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

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General Description
Taprooted perennial with a woody, branched caudex. Stems ascending to erect, simple, 5–40 cm. Herbage sparsely to densely wooly-villous. Leaves basal and alternate, petiolate; basal blades obovate, 5–40 mm long, lobed at the tip; cauline blades lanceolate to oblanceolate, 1–4 cm long, entire or pinnately divided into 3 to 7 linear-oblanceolate lobes. Heads radiate, solitary on peduncles 3–15 cm long; involucre hemispheric, 5–12 mm high; phyllaries 5 to 13, narrowly ovate in 2 series, wooly, viscid; receptacle flat, smooth. Ray flowers female, 11 to 13, yellow; ligules 5–16 mm long, glandular. Disk flowers perfect; corollas 2–5 mm long, yellow, glandular; style with short-hairy appendages. Pappus of 6 to 12 erose, white scales. Achenes 4-angled, obconic, 3–5 mm long, glabrous (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety lanatum or integrifolium (Hook.) Smiley.

Species Range
Present
 


Range Comments
BC to CA, NV, UT and WY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 2

(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 soil of grasslands, sagebrush steppe, open forest, open slopes (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Oregon Sunshine — Eriophyllum lanatum.  Montana Field Guide.  .  Retrieved on , from