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mountain meadow butterweed, thick-leaf groundsel, thick-leaf ragwort

bashful ragwort

Habit Perennials, (15–)20–50(–70) cm (rhizomes branched, ± woody). Perennials or biennials (possibly winter annuals), 50–80 cm (caudices fibrous-rooted).
Herbage

glabrous.

glabrous.

Stems

1–(2–4).

usually single, sometimes loosely clustered.

Leaves

(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).

progressively reduced distally; petiolate;

blades narrowly lanceolate to oblanceolate, 8–15(–20+) × (0.5–)1–3(–4) cm, bases tapered, margins entire or dentate (mid and distal leaves sessile, bractlike).

Ray florets

± 8 or ± 13;

corolla laminae 5–12 mm.

0.

Phyllaries

(± 8) ± 13 or ± 21, 5–9 mm, tips black (villous).

usually ± 13, rarely ± 8, 5–9 mm, tips green.

Calyculi

of (1–)3–6 linear to filiform bractlets (lengths to 1/3 phyllaries).

of 2–6 lance-linear bractlets.

Heads

(1–)4–12 in corymbiform arrays.

nodding, (3–)8–16(–40+) in racemiform or paniculiform arrays.

Cypselae

glabrous.

glabrous.

2n

= 40.

Senecio crassulus

Senecio pudicus

Phenology Flowering summer. Flowering summer–early autumn.
Habitat Moist to drying hillsides, meadows, other open places in forest associations Rocky, damp or drying hillsides, often coniferous and aspen woodlands
Elevation 2200–3700 m (7200–12100 ft) 2400–3800 m (7900–12500 ft)
Distribution
from FNA
CO; ID; MT; NM; NV; OR; SD; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; NM; UT
[BONAP county map]
Source FNA vol. 20, p. 551. FNA vol. 20, p. 550.
Parent taxa Asteraceae > tribe Senecioneae > Senecio Asteraceae > tribe Senecioneae > Senecio
Sibling taxa
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. lyonii, S. megacephalus, S. mohavensis, S. multidentatus, S. neowebsteri, S. parryi, S. pattersonensis, S. pseudoarnica, 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
Synonyms S. lapathifolius, S. semiamplexicaulis S. cernuus, Ligularia pudica
Name authority A. Gray: Proc. Amer. Acad. Arts 19: 54. (1883) Greene: Pittonia 4: 118. (1900)
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