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Montana Field Guide

Montana Field Guides

Common Sneezeweed - Helenium autumnale


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

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General Description
Fibrous-rooted perennial herbs. Stems erect, often branched, 15–60 cm, winged-decurrent from leaf bases. Herbage puberulent, minutely punctate. Leaves cauline, petiolate below, sessile above; basal withered at flowering; blades lanceolate, entire to obscurely dentate, 2–10 cm, reduced upward. Inflorescence corymbiform. Heads radiate; involucre reflexed; phyllaries subequal in 2 or 3 series, 10–15 mm long, narrowly lanceolate, green, puberulent; receptacle hemispheric, naked, pitted. Ray flowers 8 to 21, female, yellow, reflexed; ligules 10–15 mm long. Disk flowers numerous, fertile; corolla yellow, 2–4 mm long, glandular, puberulent above, tube shorter than the throat; style branches dilated. Pappus of 5 to 10 aristate, scarious scales. Achenes obconic, 4- to 5-angled, 1–2 mm long, pubescent (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 7

(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
Moist, often gravelly soil along streams, wetlands, 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:
Common Sneezeweed — Helenium autumnale.  Montana Field Guide.  .  Retrieved on , from