Flora of North America species comparison

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Senecio pattersonensis

Mono ragwort, Mount Patterson senecio
Habit Perennials, to 10 cm (rhizomes branching).
Herbage

(sometimes reddish-tinged, especially proximally) glabrous.
Stems

1–3 (arching upward).
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).
Ray florets

± 8;

corolla laminae 5–10 mm.
Phyllaries

± 13, 5–7(–8) mm.
Calyculi

of 3–5+ (inconspicuous) bractlets.
Heads

1(–4).
Cypselae

glabrous.

Senecio pattersonensis
Phenology Flowering summer.
Habitat Talus slopes
Elevation 3000–3700 m (9800–12100 ft)
Distribution
from FNA
CA; NV
[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.)
Source FNA vol. 20, p. 564.
Parent taxa 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
Synonyms S. revolutus
Name authority Hoover: Leafl. W. Bot. 5: 60. (1947)
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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