Difference between revisions of "Hartwrightia"
Proc. Amer. Acad. Arts 23: 264. 1888.
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|tribe=Asteraceae tribe Eupatorieae | |tribe=Asteraceae tribe Eupatorieae | ||
|genus=Hartwrightia | |genus=Hartwrightia | ||
Latest revision as of 20:09, 5 November 2020
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.
Distribution
se United States.
Discussion
Species 1.