Page authors: Don Knoke, David Giblin
Helenium autumnale
common sneezeweed, large flowered sneezeweed
WTU specimens
Other herbaria
WTU images

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.

Habitat: Stream banks and other moist, low ground generally at low elevations.

Flowers: July-September

Origin: Native

Conservation Status: Not of concern

Description:
General:

Fibrous-rooted perennial, 1.5-12 dm. tall, nearly glabrous.

Leaves:

Leaves numerous, lanceolate, narrowed to a sessile base from which wings are formed along the stem, only slightly reduced upward, 4-15 cm. long and 5-40 mm. wide, usually shallowly toothed, the lowest early-deciduous.

Flowers:

Heads usually numerous, sub-globose, the disk yellow, 1-2 cm. wide; involucral bracts narrow, herbaceous, soon deflexed; rays 10-20, pistillate, wedge-shaped, 3-lobed, yellow, soon deflexed; pappus of several series of papery scales, lanceolate or ovate, long-pointed, 2 mm. long.

Fruits:

Achenes truncately obpyramidal, 4-5 angled and ribbed.

Accepted Name:
Helenium autumnale L.
Publication: Sp. Pl. 2: 886. 1753.

Synonyms & Misapplications:
Helenium autumnale L. var. autumnale
Helenium autumnale L. var. grandiflorum Torr. & A. Gray [HC]
Helenium autumnale L. var. montanum (Nutt.) Fernald [HC]
Additional Resources:

PNW Herbaria: Specimen records of Helenium autumnale in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Helenium autumnale checklist entry.

E-Flora BC: Helenium autumnale atlas page.

CalPhotos: Helenium autumnale photos.

USDA Plants: Helenium autumnale information.

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