Flora of North America species comparison

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Senecio astephanus

San Gabriel ragwort
Habit Perennials, 40–100 cm (caudices unknown).
Herbage

unevenly floccose-lanate or tomentose, glabrescent.
Stems

single.
Leaves

progressively reduced distally;

petiolate;

blades elliptic-ovate to lanceolate, 10–20(–30?) × 3–7+ cm, bases tapered, margins dentate to denticulate (teeth cartilaginous; mid leaves similar, sessile, smaller; distal leaves bractlike).
Ray florets

0.
Phyllaries

± 21, 7–8 mm, tips greenish.
Calyculi

of 5–8+ lance-linear to filiform bractlets (lengths 1/3–7/8 phyllaries).
Heads

10–20+ in loose or congested, cymiform arrays.
Cypselae

glabrous.
2n

= 40.

Senecio astephanus
Phenology Flowering spring.
Habitat Steep, rocky slopes
Elevation 400–1500 m (1300–4900 ft)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Of conservation concern.

Senecio astephanus is collected infrequently.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 553.
Parent taxa Asteraceae > tribe Senecioneae > Senecio
Sibling taxa
S. actinella, S. amplectens, S. ampullaceus, S. aphanactis, S. arizonicus, S. aronicoides, 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. spribillei, S. squalidus, S. sylvaticus, S. taraxacoides, S. triangularis, S. viscosus, S. vulgaris, S. warnockii, S. wootonii
Name authority Greene: Pittonia 1: 174. (1888)
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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