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Senecio astephanus
Greene
Family:
Asteraceae
Images
not available
Flora of North America
Resources
Theodore M. Barkley+ in Flora of North America (vol. 20)
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).
Heads
10-20+ in loose or congested, cymiform arrays.
Calyculi
of 5-8+ lance-linear to filiform bractlets (lengths
1
/ 3 -
7
/ 8 phyllaries).
Phyllaries
± 21, 7-8 mm, tips greenish.
Ray florets
0.
Cypselae
glabrous.
2
n
= 40. Flowering spring. Steep, rocky slopes; of conservation concern; 400-1500 m; Calif.
Senecio astephanus
is collected infrequently.
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