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Arizona - New Mexico Chapter
Consortium of Midwest Herbaria
Intermountain Region Herbaria Network (IRHN)
Mid-Atlantic Herbaria
North American Network of Small Herbaria
Northern Great Plains Herbaria
Madrean Archipelago Biodiversity Assessment (MABA) - Flora
Red de Herbarios del Noroeste de México (northern Mexico)
SERNEC - Southeastern USA
Senecio clarkianus
A. Gray
Family:
Asteraceae
Clark's Ragwort
FNA
Resources
Theodore M. Barkley+ in Flora of North America (vol. 20)
Perennials,
(50-)60-100(-120) cm (caudices fibrous-rooted).
Herbage
sparsely floccose-tomentose, unevenly glabrescent.
Stems
single.
Leaves
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.
Heads
8-20 in corymbiform arrays.
Calyculi
of 3-8+ linear to filiform bractlets (lengths
1
/ 2 -
3
/ 4 + phyllaries).
Phyllaries
± 13 or ± 21, 5-8 mm, tips green.
Ray florets
± 8 or ± 13; corolla laminae 8-12(-20) mm.
Cypselae
glabrous.
Flowering late summer. Moist meadows, conifer-dominated sites; 1400-2700 m; Calif.
Senecio clarkianus
grows on west slopes of the central and southern Sierra Nevada.
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This project made possible by
National Science Foundation Award EF 1702516
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