Senecio bigelovii |
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nodding groundsel, nodding ragwort |
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Habit | Perennials, (20–)40–80(–120) cm (caudices fibrous-rooted). | ||||
Herbage | usually floccose-tomentose to glabrescent, sometimes glabrous. |
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Stems | single or loosely clustered. |
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Leaves | progressively reduced distally; petiolate (proximal); blades ovate to lanceolate, 7–15 × (1–)2–5 cm, bases contracted or tapered, margins subentire or serrate to dentate (mid and distal leaves similar, sessile, bractlike, often clasping). |
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Ray florets | 0. |
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Phyllaries | ± 13 or ± 21, 6–12 mm, tips green. |
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Calyculi | of 4–10 linear bractlets (lengths mostly 1/3–1/2 phyllaries, sometimes 1 or 2 equaling phyllaries). |
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Heads | nodding (especially when young), (1–)3–12(–20) in racemiform or paniculiform arrays (terminal heads often largest). |
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Cypselae | glabrous. |
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2n | = 40. |
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Senecio bigelovii |
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Distribution |
AZ; CO; NM; UT; WY; s Rocky Mountains and adjacent areas of the United States
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Discussion | Varieties 2 (2 in the flora). The two varieties of Senecio bigelovii are distinguished by morphologic tendencies and by geography. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 549. | ||||
Parent taxa | Asteraceae > tribe Senecioneae > Senecio | ||||
Sibling taxa | |||||
Subordinate taxa | |||||
Synonyms | Ligularia bigelovii | ||||
Name authority | A. Gray: in War Department [U.S.], Pacif. Railr. Rep. 4(5): 111. (1857) | ||||
Web links |