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Wyethia amplexicaulis (Mule-ears)
Gammill, Lynn Crosby

Wyethia amplexicaulis

Wyethia amplexicaulis (Nutt.) Nutt.


Asteraceae (Aster Family)

Synonym(s): Espeletia amplexicaulis


USDA Native Status: L48 (N)

Large, round, shiny leaves subtend a stout but lax stem, 1-3 ft. tall. Stem leaves are more lance-shaped, resembling the ears of mule. A large, yellow, sunflower-like flower head is often surrounded by smaller yellow flowers. Plant seems varnished with resin, the stout leafy stems growing from clumps of lanceolate leaves, ending in several large deep yellow flower heads on long stalks, the central head largest.

All species have leaves on the stem, distinguishing them from Balsamorhiza, which has all leaves at the base.


From the Image Gallery

17 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf: Green
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Yellow
Bloom Time: May , Jun


USA: CO , ID , MT , NV , OR , UT , WA , WY
Native Distribution: C. WA to w. MT, s. to NV & n.w. CO
Native Habitat: Dry meadows; open hillsides; foothills; canyons

Growing Conditions

Water Use: Medium
Light Requirement: Sun
Soil Moisture: Wet
Soil pH: Circumneutral (pH 6.8-7.2)
CaCO3 Tolerance: Medium
Soil Description: Moist to mesic, well-drained clayey loams.


Conspicuous Flowers: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

View propagation protocol from Native Plants Network.

National Wetland Indicator Status

Status: FAC FACU
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Seed Network - Corvallis, OR

Additional resources

USDA: Find Wyethia amplexicaulis in USDA Plants
FNA: Find Wyethia amplexicaulis in the Flora of North America (if available)
Google: Search Google for Wyethia amplexicaulis


Record Modified: 2007-01-01
Research By: TWC Staff

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