- Scientific Name: Wyethia angustifolia
- Family: Asteraceae
- Common Names: mule’s ears, California compass-plant, narrowleaf wyethia.
- Synonyms/Misapplications: Alarconia angustifolia DC.
- Codon: WYEANG
|Genus:|| Wyethia Nutt.|
|Species:|| Wyethia angustifolia (DC) Nutt.|
General: Tap-rooted, leafy-stemmed perennial, the stems stout but lax, 2-9 dm. tall, the herbage covered with short, stiff, blunt hairs. Leaves: Leaves mostly entire, the basal ones enlarged, with narrow, elongate blades, 1.5-5 dm. long and 2.5-10 cm. wide, tapering at both ends; cauline leaves smaller and variable. Flowers: Heads usually solitary; involucral bracts lance-linear, in several series, herbaceous, with conspicuous hairs on the margins; rays 13-21, chrome-yellow, pistillate and fertile, 1.5-3.5 cm. long; disk flowers light yellow, perfect and fertile; receptacle broadly convex, chaffy throughout, the bracts clasping the achenes; pappus of petal-like appendages. Fruit: Achenes compressed-quadrangular 
Occurring west of the Cascades crest in southwestern Washington, and east in the Columbia River Gorge; Washington to California.
- The plant prefers light (sandy) and medium (loamy) soils and requires well-drained soil.The plant prefers acid, neutral and basic (alkaline) soils..It cannot grow in the shade.It requires moist soil.
- Meadows and moist, open hillsides at low elevations.
- Raw stems used for food; seeds used for pinole (food) and dried for winter use; decoction of leaves used to reduce fever and induce perspiration; decoction of roots taken as an emetic; poultice of root lather used for lung problems and to draw blisters.
- The seed can be dried, ground into a powder and used as a thickener in soups or can be added to cereal flours when making bread etc. Young leaves can be eaten raw. A lemon-yellow dye is obtained from the flowers. A gold to brass dye is obtained from the flowers, leaves and stems.
Soak or stratify seed. Seeds should receive cool-moist stratification 90-120 days for proper germination.
Sample From: 2010
Average Measurement: 7.6 x 2.5 x 2.2
Measurement Range: L: 7 - 8, W: 2 - 3, D: 1.9 - 2.5
Shape: Seed is long and narrow. Seed is narrow at hilum and broadens at opposite apex.
Additional Structures: Pappus that is attached at apex opposite hilum. Pappus fibers are broad at the base and are attached in a circular pattern. Pappus very brittle, and about ½ the length of the seed body.
Color: Hilum white, seed body medium brown, and pappus is tan to off-white.
Surface: Seed is matte with short bristles that are concentrated toward the pappus. Seed has many longitudinal ridges.
Basic Explanations and Assumptions:
The dimensions for the seeds are length x width x depth. The location of the hilum is used as the base of the seed, and the length is measured from hilum to the opposite apex. Where a style is present, the length is measured from the hilum to the bottom of the style. Width is measured at a right angle to the length at the widest part. Depth is measured at a right angle to the intersection of height and width lines.
Measurements included are the mean average for each measurement of ten separate seeds.
All measurements in millimeters unless otherwise noted.
- Integrated Taxonomic Information System. Retrieved from https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=38675#null
- WTU Herbarium, Burke Museum, & University of Washington. Retrieved from https://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Wyethia angustifolia
- Plants for a Future. Retrieved from https://pfaf.org/user/Plant.aspx?LatinName=Wyethia+angustifolia
- Native American Ethnobotany Database. Retrieved from http://naeb.brit.org/
- Native Plants of North America. Retrieved from https://www.wildflower.org/plants/result.php?id_plant=WYAN