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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.


Dale E. Johnson

Annual 2–10 cm, generally loosely woolly
Leaves alternate (or lowest opposite), simple
Inflorescence: heads solitary, radiate; involucre subcylindric; phyllaries in 1 series, spreading in fruit, oblanceolate, acute, alternate phyllaries scarious-margined; receptacle convex, naked
Ray flowers 1 per phyllary; ligules 3-lobed, yellow (or white and red-veined)
Disk flowers narrowly funnel-shaped, yellow, glabrous; stamen tips narrowly triangular
Fruit narrowly obconic; pappus 0, or of many bristles fused at base
Species in genus: 2 species: sw US
Etymology: (Greek: fused bristly pappus)
Reference: [Johnson 1991 Novon 1:119–124]
Horticultural information: TRY.


S. fremontii A. Gray

Plant ± decumbent
Leaves 5–20 mm, wedge-shaped below, spoon-shaped above, 3-lobed (margins rolled under) or entire
Inflorescence: peduncles 3–25 mm; involucre 5–7 mm; phyllaries generally 5
Ray flowers: ligules 3–5 mm, yellow
Fruit 2–3.5 mm, strigose; pappus of 30–40 bristles, ± 2 mm
Chromosomes: 2n=12
Ecology: Open, sandy to gravelly areas
Elevation: 600–2500 m.
Bioregional distribution: Mojave Desert
Distribution outside California: to sw Utah, nw Arizona
Flowering time: Apr–Jun

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bioregional map for SYNTRICHOPAPPUS%20fremontii being generated

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