Senecio vulgaris
common groundsel, common ragwort, old-man-in-the-spring
glabrous or sparsely and unevenly tomentose when young.
usually 1.
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).
0.
± 21, 4–6 mm, tips usually green, sometimes black.
of 2–4(–6+) bractlets (prominent, black-tipped, lengths about 1/4 phyllaries).
8–20 in loose, corymbiform arrays.
usually sparsely hairy, sometimes nearly glabrous.
= 40.
Senecio vulgaris
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.)
- 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. 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
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- Encyclopedia of Life
- Wikipedia
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