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.



Elizabeth McClintock

Annual, perennial herb, sometimes woody at base, often aromatic, glabrous or hairy
Stems decumbent or erect, branched
Leaves alternate, dissected
Inflorescence: heads disciform, radiate, or discoid, few–many; phyllaries in 2–3 overlapping series; receptacle convex to conic, generally dotted with tubercles
Pistillate or ray flowers many; corollas tubular or with inconspicuous to well developed ligules, yellow or white
Disk flowers many; corollas tubular, yellow; anther tips ovate, bases rounded or ± cordate; style branches truncate with shrub-like tips
Fruit generally 3–10-ribbed; pappus a crown of short scales
Species in genus: 70 species: Eur, Asia, North America
Etymology: (Latin: immortality)
See also Sphaeromeria.


T. camphoratum Less.


Perennial, stout, aromatic, hairy, especially on young growth; rhizome creeping
Stems 10–25 cm, branched, decumbent
Leaves 7–25 cm, 3–5 cm wide, thick, ovate, sessile, clasping at base, 2–3-pinnate, each 1° leaflet with 1–5 divisions, flat or edges curled under, glandular
Inflorescence: heads disciform or radiate, 3–15, in flat-topped clusters, 10–15 mm diam; phyllaries firm, margins scarious
Pistillate flowers: corolla tubular or with ligule < 3 mm
Disk flowers: corollas, 3–4 mm, tubular, 5-lobed
Fruit 3–4 mm, indistinctly 5-ribbed, glandular; pappus a short, irregularly toothed crown
Chromosomes: 2n=54
Ecology: Uncommon. Coastal dunes
Elevation: < 30 m.
Bioregional distribution: North Coast, n Central Coast
Distribution outside California: Oregon to s British Columbia
Synonyms: T. douglasii DC
Horticultural information: DRN, SUN: 4, 5, 17 &IRR: 8, 9, 14, 15, 16, 19, 20, 21, 22, 23, 24.

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