Senecio vulgaris
Senecio sylvaticus
common groundsel, common ragwort, old-man-in-the-spring
heath groundsel, wood groundsel, woodland groundsel, woodland ragwort
glabrous or sparsely and unevenly tomentose when young.
puberulent (hairs abundant, curly).
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).
evenly distributed; petiolate;
blades obovate to oblong, 3–7(–12) × 1–3(–4) cm, usually 1–2-pinnate, bases tapered, ultimate margins dentate (distal leaves similar, clasping, bractlike).
0.
0 or 1–8+;
corolla laminae usually 1–2+ mm (barely surpassing phyllaries).
± 21, 4–6 mm, tips usually green, sometimes black.
± 13 (± 21), 4–7+ mm, tips greenish or minutely black.
of 2–4(–6+) bractlets (prominent, black-tipped, lengths about 1/4 phyllaries).
0 or of 1–5+ linear to filiform bractlets.
8–20 in loose, corymbiform arrays.
12–24 in corymbiform arrays.
usually sparsely hairy, sometimes nearly glabrous.
hairy (especially on angles).
= 40.
= 40.
Senecio vulgaris
Senecio sylvaticus
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.)
Senecio sylvaticus is a Eurasian weed that favors cool, wet climates. It is well established in coastal areas of the Pacific Coast and in parts of Newfoundland and Quebec; elsewhere in the flora, it appears to be sporadic.
(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
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
- Local floras: BC, CA, OR, WA
- Local Web sites: CalFlora, CalPhotos, Flora NW, Go Botany, LA Plants, MI Flora, PNW Herbaria
- WildflowerSearch
- iNaturalist (observations)
- USDA Plants Database
- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
