Compilation
Senecio milleflorus

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Name

Identification
Senecio milleflorus Greene [family COMPOSITAE ] Verified by Not on sheet, Senecio atratus Greene [family COMPOSITAE ] (stored under name); Verified by Not on sheet, Isotype of Senecio milleflorus Greene [family COMPOSITAE ] Verified by Not on sheet, Senecio atratus Greene [family COMPOSITAE ] Verified by Not on sheet,
Related name
  • Senecio milleflorus
  • Senecio atratus

Flora

Entry for Senecio atratus Greene [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Senecio atratus Greene [family COMPOSITAE], Pittonia, 3: 105. 1896
Senecio atratus var. milleflorus (Greene) Greenman [family COMPOSITAE]
Senecio milleflorus Greene [family COMPOSITAE]
Treatment Author(s)
Theodore M. Barkley†
Information
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.)
Phenology
mar-may (spring), jun-aug (summer), sep-nov (fall)
Altitude range
2800–4000 m;
Distribution
USA Colo.USA N.Mex.USA UtahUSA Wyo.

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