Senecio amplectens
Senecio clarkianus
alpine groundsel, showy alpine ragwort
Clark's ragwort
(often purplish-tinged) glabrous or sparsely and unevenly hairy, especially near leaf axils and among heads, usually glabrescent.
sparsely floccose-tomentose, unevenly glabrescent.
single or loosely clustered.
single.
usually progressively reduced distally (basal sometimes smaller than proximal or mid leaves); petiolate (petioles shorter than to equaling blades, often clasping);
blades broadly lanceolate or lanceolate to oblanceolate, (5–)10–20+ × 2–4(–5+) cm, bases tapered, margins dentate to denticulate (distal leaves smaller, bractlike).
evenly distributed; petiolate;
well-developed mid leaves: blades lanceolate to oblong,(8–)10–15(–18) × (2–)3–5(–9) cm overall, margins deeply dentate or irregularly pinnate-lobed to laciniate;
distal leaves sessile, weakly clasping.
usually ± 13, sometimes fewer;
corolla laminae (10–)15–25 mm.
± 8 or ± 13;
corolla laminae 8–12(–20) mm.
± 13 or ± 21, tips often black or brownish (sometimes with scattered black hairs).
± 13 or ± 21, 5–8 mm, tips green.
of 2–5+ linear to filiform bractlets (lengths to 1/2 phyllaries).
of 3–8+ linear to filiform bractlets (lengths 1/2–3/4+ phyllaries).
nodding, 1–5(–10).
8–20 in corymbiform arrays.
glabrous.
glabrous.
= 40, ca. 175–180.
Senecio amplectens
Senecio clarkianus
Varieties 2 (2 in the flora).
The varieties of Senecio amplectens are distinguished by morphologic tendencies and habitat preferences; there are many intermediates. Where the ranges of the two overlap, var. amplectens occurs at slightly lower elevations than var. holmii.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Senecio clarkianus grows on west slopes of the central and southern Sierra Nevada.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants (30–)40–60+; herbage sometimes sparsely hairy; leaves mostly proximal and mid cauline; phyllaries frequently black or purplish toward tips, sometimes with black hairs on abaxial faces | var. amplectens |
1. Plants (5–)10–20(–30) cm; herbage glabrous or glabrate at flowering; leaves mostly basal and proximal; phyllaries green or light purplish, glabrous | var. holmii |
CalFlora
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
