Senecio fremontii |
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dwarf mountain butterweed, dwarf mountain ragwort, Fremont's groundsel, Fremont's ragwort |
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Habit | Perennials, 10–30(–40) cm (perennating bases subrhizomatous, spreading, sometimes knotty-woody). | ||||||||||||
Herbage | (often purple-tinged) glabrous. |
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Stems | clustered (arching upward to semiprostrate). |
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Leaves | evenly distributed or smaller and fewer distally (somewhat stiffish-succulent when fresh, proximalmost and distalmost often smaller, bractlike); petiolate; blades ovate or obovate to oblanceolate, 2–5(–7) × 1–3(–4) cm, bases ± truncate to tapered, margins laciniate to dentate or subentire. |
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Ray florets | ± 8; corolla laminae 8–12 mm. |
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Phyllaries | (± 8) ± 13 (± 21), 5–12 mm, tips green or brownish. |
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Calyculi | 0 or of 1–5+ usually lance-deltate to linear, sometimes foliaceous, bractlets (lengths mostly 1/5–1/2 phyllaries). |
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Heads | 1–5+. |
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Cypselae | glabrous or strigose-hirtellous, at least on angles. |
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2n | = 40, 40+, 80. |
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Senecio fremontii |
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Distribution |
CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC
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Discussion | Varieties 4 (4 in the flora). The varieties are distinguished by morphologic tendencies plus their geographic ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 564. | ||||||||||||
Parent taxa | Asteraceae > tribe Senecioneae > Senecio | ||||||||||||
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Synonyms | S. ductoris | ||||||||||||
Name authority | Torrey & A. Gray: Fl. N. Amer. 2: 445. (1843) | ||||||||||||
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