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.


G. Ledyard Stebbins

Perennial from taproot; sap milky
Stems naked, hollow
Leaves all basal, toothed or lobed; lobes acute
Inflorescence: heads ligulate, solitary, scapose; phyllaries many, outer ovate to lanceolate, generally reflexed, inner erect, linear; receptacle convex, naked
Flowers many; ligules yellow, readily withering
Fruit fusiform; ribs rough; beak slender, >> body; pappus of many, white, slender bristles, not plumose. Many named species, mostly reproducing clonally by asexual seeds: Eurasia, CA
Etymology: (Greek: ancient name)
Reference: [Taylor 1987 Bull Torrey Bot Club 114:109–120]


T. californicum Munz & I.M. Johnst.


Leaves toothed or shallowly lobed, oblanceolate
Inflorescence: heads 2.2–3 cm diam; outer phyllaries erect, 5–7 mm; inner phyllaries rounded to truncate
Fruit pale brown; body tubercled near tip
Ecology: Moist meadows
Elevation: 1950–2400 m.
Bioregional distribution: San Bernardino Mountains.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for TARAXACUM%20californicum being generated

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