Page author: Don Knoke
Helianthus nuttallii
Nuttall's sunflower
WTU images
WTU specimens
Other herbaria

Distribution: Chiefly east of the Cascades: Western and Mid-western United States and adjacent Canada

Habitat: Meadows and other moist places, low to moderate elevations in the mountains

Flowers: July - September

Origin: Native

Conservation Status: Not of concern

Description:
General:

Perennial from rhizomes and tuberous roots, erect, 6-20 dm. tall, the stem glabrous below the inflorescence.

Leaves:

Leaves scabrous, lanceolate to lance-linear, with short petioles, 8-16 cm. long and 6-30 mm. wide, entire and flat.

Flowers:

Heads several, the disk 12-23 mm. wide, yellow; involucral bracts lance-linear, pointed, loose, the marginal hairs inconspicuous; receptacle chaffy throughout; pappus of 2 readily deciduous awns.

Fruits:

Achenes clasped by the inner involucral bracts.

Accepted Name:
Helianthus nuttallii Torr. & A. Gray
Publication: Fl. N. Amer. 2: 324. 1842.

Synonyms & Misapplications:
(none provided)
Infraspecies:
ssp. nuttallii – cordilleran sunflower, Nuttall's sunflower    Chiefly east of the Cascades: Western and Mid-western United States and adjacent Canada
Additional Resources:

PNW Herbaria: Specimen records of Helianthus nuttallii in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Helianthus nuttallii checklist entry.

E-Flora BC: Helianthus nuttallii atlas page.

CalPhotos: Helianthus nuttallii photos.

USDA Plants: Helianthus nuttallii information.

1 photographs:
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