Senecio neowebsteri
Senecio sylvaticus
Olympic Mountain ragwort
heath groundsel, wood groundsel, woodland groundsel, woodland ragwort
(sometimes purplish-tinged) floccose-tomentose, unevenly glabrescent.
puberulent (hairs abundant, curly).
single or loosely clustered (erect or arching).
single.
mostly cauline;
petiolate (petioles about equaling blades);
blades lanceolate or oblanceolate to ovate, (2–)4–8+ × 1.5–3 cm, bases tapered, margins denticulate (distal leaves smaller, lanceolate or linear-lanceolate, bractlike).
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).
± 13;
corolla laminae ± 15 mm.
0 or 1–8+;
corolla laminae usually 1–2+ mm (barely surpassing phyllaries).
usually ± 21, sometimes ± 13, (8–)10–15 mm, tips usually greenish (often sparsely hairy).
± 13 (± 21), 4–7+ mm, tips greenish or minutely black.
of 4–8 lanceolate to lance-linear bractlets (lengths mostly less than 1/2 phyllaries).
0 or of 1–5+ linear to filiform bractlets.
nodding, 1(–2).
12–24 in corymbiform arrays.
glabrous.
hairy (especially on angles).
= 40.
= 40.
Senecio neowebsteri
Senecio sylvaticus
Of conservation concern.
(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:
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Flora NW, 
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