Description
provided by eFloras
Perennials, (20–)35–70(–80+) cm (rhizomes or caudices branched, erect to weakly creeping). Herbage floccose-tomentose to canescent, sometimes unevenly glabrescent. Stems 1–(2–5). Leaves progressively reduced distally; petiolate; blades oblong-ovate to oblanceolate, (5–)10–30 × 1.5–4(–6) cm, bases tapered, margins dentate (denticles, dark, callous; mid leaves similar, sessile, smaller; distal leaves bractlike). Heads 20–60+ in corymbiform or subpaniculiform arrays. Calyculi of 2–5 linear bractlets (lengths to 1 / 3 phyllaries). Phyllaries (± 5) ± 8, 6–8 mm, tips black. Ray florets (± 3) ± 5; corolla laminae 5–8 mm. Cypselae glabrous. 2n = 40. (A report of 2n = 46 is presumably erroneous.)
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Senecio atratus var. milleflorus (Greene) Greenman; S. milleflorus Greene
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- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA