Wyethia amplexicaulis, mulesears



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Intermountain Flora
Plants with a stout, woody taproot and simple or nearly simple crown; stems 1-few, stout but lax, 3-8 dm long or tall; herbage and involucre wholly glabrous, resinous-varnished, the plant more strongly aromatic than its congeners; leaves firm, entire or (especially the basal ones) sometimes denticulate, the basal ones enlarged, with elliptic or lance-ovate blade 2-6 dm long and 5-16 cm wide, tapering to the short petiole; heads several or occasionally solitary, the central one large and hemispheric, the axillary ones smaller and more turbinate; involucral bracts broad and herbaceous, often surpassing the disk; rays sunflower-yellow, 2.5-6 cm long, commonly about 13 to about 21 on the terminal head, often only 8 on the lateral; 2n = 38.

Cronquist, A., Holmgren, A.H., Holmgren, N.H., Reveal, J.L., and Holmgren, P.K. (1994) "Intermountain Flora" pg.18, vol. 5, The New York Botanical Garden New York.