Flora of North America species comparison

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Senecio elmeri

Senecio pudicus

Elmer's butterweed, Elmer's ragwort

bashful ragwort
Habit Perennials, 10–20(–30) cm (rhizomes trailing or branching). Perennials or biennials (possibly winter annuals), 50–80 cm (caudices fibrous-rooted).
Herbage

unevenly villous-tomentose or floccose, glabrescent.

glabrous.
Stems

single (from loosely clustered basal leaves).

usually single, sometimes loosely clustered.
Leaves

progressively reduced distally; ± petiolate;

blades ovate to oblanceolate, (3–)4–8(–10) × 2–3(–4) cm, bases tapered, margins shallowly dentate (mid and distal leaves smaller, bractlike, 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;

corolla laminae 8–15 mm.

0.
Phyllaries

(± 8) ± 13, 8–10 mm, tips black (villous).

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

of 2–7 lance-linear to linear bractlets (lengths 1/3–2/3 phyllaries).

of 2–6 lance-linear bractlets.
Heads

erect or weakly nodding (especially in bud), (2–)5–9(–12) in loose, cymiform arrays.

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

glabrous.

glabrous.
2n

= 40.

Senecio elmeri

Senecio pudicus
Phenology Flowering summer. Flowering summer–early autumn.
Habitat Alpine and subalpine rocky sites and talus slopes Rocky, damp or drying hillsides, often coniferous and aspen woodlands
Elevation 2000–3000 m (6600–9800 ft) 2400–3800 m (7900–12500 ft)
Distribution
from FNA
WA; BC
[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. crassulus, S. elegans, 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. crepidineus S. cernuus, Ligularia pudica
Name authority Piper: Erythea 7: 173. (1899) Greene: Pittonia 4: 118. (1900)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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