|
mountain meadow butterweed, thick-leaf groundsel, thick-leaf ragwort
|
island senecio, Lyon's ragwort
|
| Perennials, (15–)20–50(–70) cm (rhizomes branched, ± woody). |
Subshrubs or shrubs, (20–)40–150 cm (taproots woody). |
glabrous. |
sparsely hairy, unevenly glabrate (usually with persistent tomentum in leaf axils and on abaxial leaf faces). |
1–(2–4). |
usually multiple (arching upwards). |
(thickish-turgid) progressively reduced distally; petiolate; blades broadly lanceolate to subelliptic, 2.5–15 × 1–5 cm, bases tapered, margins sharply dentate to subentire (some teeth callous; mid leaves sometimes larger than proximal; distal leaves sessile, smaller, often clasping). |
evenly distributed (proximal withering before flowering); sessile or obscurely petiolate; blades ± oblong or elliptic, (4–)6–10(–12) × 1.5–3 cm (1–2-pinnatifid, lobes ± linear, 1–2 mm wide), bases ± linear, ultimate margins entire. |
± 8 or ± 13; corolla laminae 5–12 mm. |
± 13; corolla laminae 8–10 mm. |
(± 8) ± 13 or ± 21, 5–9 mm, tips black (villous). |
(± 13) ± 21, (5–)6–8 mm, tips minutely black. |
of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries). |
0 or of 1–3+ (inconspicuous) bractlets. |
(1–)4–12 in corymbiform arrays. |
4–12 in cymiform arrays (involucres campanulate, 8–15 mm diam.). |
glabrous. |
hairy. |
= 40. |
= 40. |
|
|
|
|
| Flowering summer. |
Flowering spring. |
| Moist to drying hillsides, meadows, other open places in forest associations |
Ocean bluffs, open hillsides |
| 2200–3700 m (7200–12100 ft) |
0–500 m (0–1600 ft) |
|
CO; ID; MT; NM; NV; OR; SD; UT; WY
|
CA; Mexico (Baja California)
|
|
Of conservation concern. Senecio lyonii is known from the Channel Islands (off the coast of southern California) and south. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
| FNA vol. 20, p. 551. |
FNA vol. 20, p. 560. |
| Asteraceae > tribe Senecioneae > Senecio |
Asteraceae > tribe Senecioneae > Senecio |
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. aronicoides, S. astephanus, S. atratus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, S. erucifolius, S. flaccidus, S. fremontii, S. hydrophiloides, S. hydrophilus, S. integerrimus, S. jacobaea, S. lemmonii, S. lugens, S. lyonii, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, S. pudicus, S. quaylei, S. rapifolius, S. riddellii, S. sacramentanus, S. scorzonella, S. serra, S. sheldonensis, S. soldanella, S. spartioides, S. sphaerocephalus, S. spribillei, S. squalidus, S. sylvaticus, S. taraxacoides, S. triangularis, S. viscosus, S. vulgaris, S. warnockii, S. wootonii |
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. aronicoides, S. astephanus, S. atratus, S. bigelovii, S. blochmaniae, S. californicus, S. cannabifolius, S. clarkianus, S. crassulus, S. elegans, S. elmeri, S. eremophilus, S. ertterae, S. erucifolius, S. flaccidus, S. fremontii, S. hydrophiloides, S. hydrophilus, S. integerrimus, S. jacobaea, S. lemmonii, S. lugens, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, S. pudicus, S. quaylei, S. rapifolius, S. riddellii, S. sacramentanus, S. scorzonella, S. serra, S. sheldonensis, S. soldanella, S. spartioides, S. sphaerocephalus, S. spribillei, S. squalidus, S. sylvaticus, S. taraxacoides, S. triangularis, S. viscosus, S. vulgaris, S. warnockii, S. wootonii |
| S. lapathifolius, S. semiamplexicaulis |
|
| A. Gray: Proc. Amer. Acad. Arts 19: 54. (1883) |
A. Gray: in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 1(2): 454. (1886) |
| |
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