Page author: Don Knoke
Inula helenium
elecampane, inula
WTU specimens
Other herbaria

Distribution: Introduced as an ornamental and escaped, widespread in moister parts of the United States; west of the Cascades in Oregon and Washington

Habitat: Fields, roadsides and similar waste ground.

Flowers: June - September

Origin: Introduced from western and central Asia

Conservation Status: Not of concern

Description:
General:

Coarse perennial herb, up to 2 m. tall, the stem finely spreading-hairy.

Leaves:

Leaves irregularly and shallowly dentate, densely velvety beneath, the lower elliptic and long-petiolate, the blade up to 5 dm. long and 2 dm. wide, the upper leaves becoming reduced, ovate, sessile and cordate-clasping.

Flowers:

Heads few, pedunculate, large, the disk 3-5 cm. wide; involucre 2-2.5 cm. high, imbricate, the outer bracts broad, herbaceous, and densely short-hairy, the inner bracts narrow, papery and glabrous; ray flowers pistillate, slender, yellow, and over 1 cm. long; disk flowers yellow and perfect; pappus of capillary bristles.

Fruits:

Achenes slender, glabrous, 4-angled.

Accepted Name:
Inula helenium L.
Publication: Sp. Pl. 2: 881. 1753. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Inula helenium in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Inula helenium checklist entry.

E-Flora BC: Inula helenium atlas page.

CalPhotos: Inula helenium photos.

USDA Plants: Inula helenium information.

15 photographs:
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