|
common groundsel, common ragwort, old-man-in-the-spring
|
butterweed, rayless groundsel, rayless ragwort
|
| Annuals, (10–)20–50(–60+) cm (taprooted). |
Perennials (biennials?), 30–90 cm (caudices buttonlike, roots unbranched, fleshy-fibrous). |
glabrous or sparsely and unevenly tomentose when young. |
loosely and sparsely arachnose to finely tomentose, unevenly glabrescent. |
usually 1. |
single. |
evenly distributed; petiolate; blades ovate to oblanceolate, 2–10 × 0.5–2(–4) cm, bases tapered, margins lobulate to dentate, ultimate margins often secondarily dentate to denticulate (distal leaves sessile). |
progressively reduced distally; petiolate; blades ovate or oblanceolate to oblong, 7–20 × 2–3 cm, bases broadly to narrowly tapered, margins repand-denticulate or sublaciniate to subentire (mid and distal leaves sessile, smaller, weakly clasping). |
0. |
0 or 1–2; corolla laminae 4–7 mm. |
± 21, 4–6 mm, tips usually green, sometimes black. |
± 8 or ± 13, 4–8 mm, tips green or black. |
of 2–4(–6+) bractlets (prominent, black-tipped, lengths about 1/4 phyllaries). |
0 or of 1–3+ oblong to linear bractlets (seldom more than 1.5 mm). |
8–20 in loose, corymbiform arrays. |
(6–)15–30+ in corymbiform arrays. |
usually sparsely hairy, sometimes nearly glabrous. |
glabrous. |
= 40. |
= 40. |
|
|
|
|
| Flowering early spring (through summer in far North). |
Flowering spring–early summer. |
| Disturbed sites |
Dry or drying sites in open woodlands, upper foothills and montane forests |
| 1–1000 m (0–3300 ft) |
800–2500 m (2600–8200 ft) |
|
AK; AL; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NV; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; YT; SPM; Greenland; Eurasia [Probably introduced]
|
CA; OR
|
Senecio vulgaris has not been collected in the Canadian Arctic north of Hudson Bay. A widely scattered weed of Eurasian origin, Senecio vulgaris is particularly abundant in southern areas of cool damp winters or northern areas of cool damp summers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
| FNA vol. 20, p. 562. |
FNA vol. 20, p. 556. |
| Asteraceae > tribe Senecioneae > Senecio |
Asteraceae > tribe Senecioneae > Senecio |
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. aronicoides, S. astephanus, S. atratus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. crassulus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, S. erucifolius, S. flaccidus, S. fremontii, S. hydrophiloides, S. hydrophilus, S. integerrimus, S. jacobaea, S. lemmonii, S. lugens, S. lyonii, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, S. pudicus, S. quaylei, S. rapifolius, S. riddellii, S. sacramentanus, S. scorzonella, S. serra, S. sheldonensis, S. soldanella, S. spartioides, S. sphaerocephalus, S. spribillei, S. squalidus, S. sylvaticus, S. taraxacoides, S. triangularis, S. viscosus, S. warnockii, S. wootonii |
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. astephanus, S. atratus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. crassulus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, S. erucifolius, S. flaccidus, S. fremontii, S. hydrophiloides, S. hydrophilus, S. integerrimus, S. jacobaea, S. lemmonii, S. lugens, S. lyonii, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, S. pudicus, S. quaylei, S. rapifolius, S. riddellii, S. sacramentanus, S. scorzonella, S. serra, S. sheldonensis, S. soldanella, S. spartioides, S. sphaerocephalus, S. spribillei, S. squalidus, S. sylvaticus, S. taraxacoides, S. triangularis, S. viscosus, S. vulgaris, S. warnockii, S. wootonii |
|
S. leptolepis, S. rawsonianus |
| Linnaeus: Sp. Pl. 2: 867. (1753) |
de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 426. (1838) |
- Local floras:
 BC,  CA,  OR,  WA
- Local Web sites: CalFlora, CalPhotos,
 Flora NW,  Go Botany,  IL Wildflowers,  KS Wildflowers,  LA Plants,  MD Biodiversity,  MI Flora,  MN Wildflowers,  MO Plants,  PNW Herbaria, Turner Photog.
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