Flora of North America species comparison

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Senecio spribillei

Senecio clarkianus

Clark's ragwort
Habit Perennials, 5–20 cm (caudices branched). Perennials, (50–)60–100(–120) cm (caudices fibrous-rooted).
Herbage

glabrous.

sparsely floccose-tomentose, unevenly glabrescent.
Stems

usually single.

single.
Leaves

progressively reduced distally (basal and proximal withering before flowering);

petiolate (petioles purplish, weakly winged, 4–5 cm);

blades broadly triangular-ovate to suborbiculate, 2–4(–5) × 2.5–3 cm, bases truncate to ± cuneate, margins coarsely spinulose-dentate (mid leaves similar, persistent).

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.
Ray florets

“few”;

corolla laminae ca. 7 mm (inconspicuous, equaling or barely surpassing phyllaries).

± 8 or ± 13;

corolla laminae 8–12(–20) mm.
Phyllaries

± 13, 7–9 mm, tips green.

± 13 or ± 21, 5–8 mm, tips green.
Calyculi

of “few,” linear bractlets.

of 3–8+ linear to filiform bractlets (lengths 1/2–3/4+ phyllaries).
Heads

nodding, 4–6.

8–20 in corymbiform arrays.
Cypselae

glabrous.

glabrous.

Senecio spribillei

Senecio clarkianus
Phenology Flowering Aug. Flowering late summer.
Habitat Alpine rock ledges Moist meadows, conifer-dominated sites
Elevation 2500 m (8200 ft) 1400–2700 m (4600–8900 ft)
Distribution
from FNA
MT
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Senecio spribillei (from Snowshoe Peak, Cabinet Mountains) is similar in aspect to S. neowebsteri of the Olympic Mountains, Washington.

(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.)
Source FNA vol. 20, p. 551. FNA vol. 20, p. 566.
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. 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. 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. 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. 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
Name authority W. A. Weber: Sida 20: 511, fig. 1. (2002) A. Gray: Proc. Amer. Acad. Arts 7: 362. (1868)
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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