Senecio pattersonensis
Senecio sylvaticus
Mono ragwort, Mount Patterson senecio
heath groundsel, wood groundsel, woodland groundsel, woodland ragwort
(sometimes reddish-tinged, especially proximally) glabrous.
puberulent (hairs abundant, curly).
1–3 (arching upward).
single.
evenly distributed (proximal often withering before flowering); obscurely petiolate or sessile;
blades oblanceolate to lance-linear (sometimes with 1–2 lateral lobes), 2–4 cm × 3–5 mm, bases subdecurrent, weakly clasping, margins entire or wavy (often revolute).
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).
± 8;
corolla laminae 5–10 mm.
0 or 1–8+;
corolla laminae usually 1–2+ mm (barely surpassing phyllaries).
± 13, 5–7(–8) mm.
± 13 (± 21), 4–7+ mm, tips greenish or minutely black.
of 3–5+ (inconspicuous) bractlets.
0 or of 1–5+ linear to filiform bractlets.
1(–4).
12–24 in corymbiform arrays.
glabrous.
hairy (especially on angles).
= 40.
Senecio pattersonensis
Senecio sylvaticus
Of conservation concern.
Senecio pattersonensis has the aspect of a depauperate S. fremontii with notably narrow leaves. Some plants in collections appear to be intergrades with S. spartioides.
(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.)
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