A. Gray ex S. Watson

Proc. Amer. Acad. Arts 23: 264. 1888.

Etymology: For Samuel Hart Wright, 1825–1905, collector of the specimens from which the genus was described
Treatment appears in FNA Volume 21. Treatment on page 540. Mentioned on page 460.

Perennials, 60–120 cm (rhizomes thickened, fibrous-rooted). Stems erect, branched distally. Leaves basal and cauline; mostly alternate; petiolate or sessile; blades 1-nerved (or pinnately nerved), elliptic to linear [spatulate to oblanceolate], margins mostly entire, faces glabrous, gland-dotted. Heads discoid, in loose, corymbiform arrays. Involucres broadly obconic, 2–3 mm diam. Phyllaries persistent, 12–15 in 2–3 series, not notably nerved, oblong-elliptic to lanceolate, ± equal (herbaceous). Receptacles convex, usually partially paleate (paleae peripheral). Florets 7–10; corollas white or pinkish to bluish, throats campanulate (lengths ca. 1.5 times diams.), lobes 5, ± deltate; styles: bases not enlarged, glabrous, branches filiform to weakly clavate. Cypselae obpyramidal, 5-angled or -grooved, gland-dotted; pappi usually 0, rarely 1(–5+), fragile, flexuous, ± glandular setae. x = 10.


se United States.


Species 1.