Page authors: Don Knoke, David Giblin
Wyethia amplexicaulis
northern mule's ears, smooth dwarf sunflower
WTU specimens
Other herbaria

Distribution: Occurring east of the Cascades in Washington; Washington south to Nevada, east to the Rocky Mountains.

Habitat: Slightly moist spots in the shrub-steppe, to open areas at mid-elevation.

Flowers: May-July

Origin: Native

Conservation Status: Not of concern

Description:
General:

Tap-rooted, glabrous, leafy-stemmed perennial, the stems stout but lax, 3-8 dm. tall, resinous throughout.

Leaves:

Leaves firm, mostly entire, the basal ones enlarged, the blades elliptic or lance-elliptic, 2-6 dm. long and 5-16 cm. wide, tapering to a short petiole, the cauline leaves smaller, sessile, becoming ovate or lance-ovate and clasping.

Flowers:

Heads usually several, the central one larger; involucral bracts broad and herbaceous, in several series, often surpassing the disk; rays 13-21 in the terminal head, chrome-yellow, pistillate and fertile, 2.5-5 cm. long; disk flowers numerous, light yellow, perfect and fertile; receptacle broadly convex, chaffy throughout, the bracts clasping the achenes; pappus of petal-like appendages.

Fruits:

Achenes compressed-quadrangular.

Accepted Name:
Wyethia amplexicaulis (Nutt.) Nutt.
Publication: Trans. Amer. Philos. Soc., n. s. 7: 352. 1840. 1840.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Wyethia amplexicaulis in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Wyethia amplexicaulis checklist entry.

E-Flora BC: Wyethia amplexicaulis atlas page.

CalPhotos: Wyethia amplexicaulis photos.

USDA Plants: Wyethia amplexicaulis information.

37 photographs:
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