Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)4–5; stamens 4–5, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):1–28. See glossary p. 25 for illustrations of general family characteristics.



Theodore M. Barkley

Annual or weak per from taproot, often ill-smelling
Leaves alternate, subentire to pinnately dissected, sometimes clasping
Inflorescence: heads generally many, disciform; involucre cylindric to urn-shaped, phyllaries equal in 1 series (or with few smaller bractlets), green or black-tipped; receptacle flat, naked
Pistillate flowers many; corolla narrowly cylindric, ± light yellow
Disk flowers many, sometimes staminate; corollas ± light yellow; anther bases rounded, tips short-triangular; style tips ± hairy, generally papillate
Fruit cylindric, ribbed; pappus of many fine bristles, white in CA
Species in genus: ± 25 species: Am, Australasia (or 5 species: Am)
Etymology: (Greek: name of a Senecio sp.)
Reference: [Barkley & Cronquist 1978 North America Fl II 10:139–142]


E. glomerata (Poir.) DC.

Plant 6–20 dm, lightly gray-hairy, becoming ± glabrous
Leaves (2)7–15 cm; blade narrowly lanceolate, pinnately lobed, lobes generally sharp-toothed
Inflorescence ± flat-topped; involucre cylindric; phyllaries ± 13, 4–7 mm; receptacle narrow
Fruit generally < 2 mm; pappus persistent
Chromosomes: 2n=60
Ecology: Woods near coast
Elevation: < 500 m.
Bioregional distribution: North Coast, Outer North Coast Ranges, Central Coast, Outer South Coast Ranges
Distribution outside California: Oregon; native to Australasia
Synonyms: E. arguta DC

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