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Mono ragwort, Mount Patterson senecio

purple ragwort, red-purple ragwort

Habit Perennials, to 10 cm (rhizomes branching). Annuals, 20–40(–60) cm (taprooted).
Herbage

(sometimes reddish-tinged, especially proximally) glabrous.

(somewhat sticky) hairy or unevenly glabrate.

Stems

1–3 (arching upward).

single (often branching distally).

Leaves

evenly distributed (proximal often withering before flowering); obscurely petiolate or sessile;

blades oblanceolate to lance-linear (sometimes with 1–2 lateral lobes), 2–4 cm × 3–5 mm, bases subdecurrent, weakly clasping, margins entire or wavy (often revolute).

evenly distributed;

petiolate (petiole bases ± expanded);

blades obovate (lyrate to pinnatifid, lobes linear to ± cruciate), 3–8 × 1.5–3.5 cm, bases contracted or tapered, ultimate margins ± dentate to crenate.

Ray florets

± 8;

corolla laminae 5–10 mm.

± 13;

corolla laminae (deep red to purple) 10–15 mm.

Phyllaries

± 13, 5–7(–8) mm.

± 13+, 6–10 mm, tips black.

Calyculi

of 3–5+ (inconspicuous) bractlets.

of 8–14 ± ovate bractlets (lengths to 1/2 phyllaries).

Heads

1(–4).

8–20 in corymbiform arrays.

Cypselae

glabrous.

usually hairy.

2n

= 20.

Senecio pattersonensis

Senecio elegans

Phenology Flowering summer. Flowering mostly spring–summer (sparingly at other times).
Habitat Talus slopes Disturbed coastal sites
Elevation 3000–3700 m (9800–12100 ft) 0–100 m (0–300 ft)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
CA; Africa [Introduced in North America]
[BONAP county map]
Discussion

Of conservation concern.

Senecio pattersonensis has the aspect of a depauperate S. fremontii with notably narrow leaves. Some plants in collections appear to be intergrades with S. spartioides.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Senecio elegans escapes from cultivation and persists along the central coast of California. Native to South Africa, it is now established widely in areas of Mediterranean climate.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 20, p. 564. FNA vol. 20, p. 567.
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. 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. 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
Synonyms S. revolutus
Name authority Hoover: Leafl. W. Bot. 5: 60. (1947) Linnaeus: Sp. Pl. 2: 869. (1753)
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