Senecio lugens |
Senecio vulgaris |
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common groundsel, old-man-in-the-spring |
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Habit | Herbs annual, (1)2–5(6+) dm; caudices taprooted. | |
Stems | usually 1, rarely 2–3, glabrous or sparsely and unevenly tomentose. |
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Leaves | evenly distributed along stems, oblanceolate to narrowly obovate or ovate, bases tapering; margins lobulate to dentate, ultimate margins secondarily denticulate; proximal petiolate; distal sessile. |
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Inflorescences | loose corymb-like arrays; bracts few, inconspicuous. |
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Involucres | urceolate. |
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Ray florets | 0. |
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Disc florets | (30)55–65. |
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Phyllaries | 21, 4–6 mm; tips usually black. |
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Calyculi | 2–4(6+) bractlets, 2–3 mm. |
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Fruits | 2–2.5 mm, sparsely to densely pubescent, rarely glabrous. |
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Heads | 8–20. |
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2n | =40. |
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Senecio lugens |
Senecio vulgaris |
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Distribution | ||
Discussion | Disturbed areas. Flowering Feb–Oct. 0–1000 m. CR, ECas, Est, Lava, Sisk, WV. CA, ID, NV, WA; throughout North America; Asia, Europe. Exotic. |
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Source | Flora of Oregon, volume 2, page 342 Debra Trock |
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Sibling taxa | ||
Web links |
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