5. Gaillardia aristata Pursh, Fl. Amer. Sept. 2: 573. 1813.
Perennials (sometimes flowering first year), 20–80 cm. Leaves basal and cauline or cauline; petiolar bases 5–15 cm; blades oblanceolate to lanceolate, 5–15 cm × 5–30(–40) mm, margins raggedly pinnately lobed to toothed or entire, faces scabrellous and/or sparsely to densely villous (hairs jointed). Peduncles (5–)20–35+ cm. Phyllaries 24–40+ ovate to lance-attenuate, 10–15+ mm, ciliate with jointed hairs (also strigose and gland-dotted). Receptacular setae 2–6 mm. Ray florets (6–)12–18+; corollas yellow or yellow/purple, rarely tubular and 5-lobed, usually distally laminate and 3-lobed, 15–35+ mm. Disc florets 60–120+; corollas usually purple or purple-tipped, sometimes yellow, tubes 0.5–1.5 mm, throats cylindric to urceolate, 4.5–5.5 mm, lobes lance-ovate to triangular-attenuate, 1–2 mm, jointed hairs 0.3+ mm. Cypselae clavate (outer) to obpyramidal (inner), 2.5–6 mm, hairs 1.5–2.5 mm, inserted at bases; pappi of 8 ovate to lanceolate, aristate scales 5–6 mm (scarious bases 1.5–3 × 0.4–1.5 mm). 2n = 34, 68.
Flowering May–Sep. Open places, usually among aspens or pines, or with sagebrush, often dry, sandy benches or bars; 200–2900 m; Alta., B.C., Man., N.W.T., Sask., Yukon; Colo., Conn., Idaho, Mass., Minn., Mont., N.H., N.Dak., Oreg., S.Dak., Utah, Wash., Wyo.