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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.



John S. Mooring and Dale E. Johnson

Annual to shrubs, ± woolly
Leaves generally alternate, entire to nearly compound
Inflorescence: heads 1–many, generally radiate; cluster often ± flat-topped; involucre obconic to hemispheric; phyllaries in 1 series, free or ± fused; receptacle flat to columnar, generally naked
Ray flowers generally ± 1 per phyllary; ligules entire to lobed, generally yellow (white)
Disk flowers (3)10–300; corolla yellow; anther tips ovate, deltate or awl-shaped
Fruit 4-angled or flattened in outer flowers, generally club-shaped in inner flowers; pappus 0–15 ± jagged or fringed scales
Species in genus: 14 species: w North America
Etymology: (Greek: woolly leaf)
Reference: [Mooring 1991 Madroño 38:213–226]
Annual species by Dale E. Johnson.


E. lanatum (Pursh) J. Forbes

Generally ± subshrub 1–10 dm
Leaf 1–8 cm, linear to ovate, entire to ± 2-pinnately compound, generally becoming glabrous above
Inflorescence: heads 1–5+; peduncles 3–30 cm; involucres 5–12 mm, bell-shaped to hemispheric; phyllaries 5–15; receptacle ± flat to ± conic
Ray flowers (0) generally 8–13; ligules 6–20 mm, oblong to elliptic
Disk flowers 20–300; corollas 2.5–5 mm, tube generally glandular
Fruit generally variable, 2–5 mm, glandular or hairy; pappus scales 0 or 6–12, 0–2 mm, translucent
Ecology: Many (generally dry) habitats
Elevation: < 4000 m.
Bioregional distribution: Northwestern California, Cascade Range, Sierra Nevada (except s Sierra Nevada Foothills), Sacramento Valley, Central Western California (except Inner South Coast Ranges), Modoc Plateau
Distribution outside California: to British Columbia, Montana, Wyoming, Nevada
Polyploid pillar complex of intergrading races; key is to modal populations; some vars. hybridize with E. confertiflorum.

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