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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.


Gregory K. Brown and David J. Keil

Perennial < 5 m diam, ± mat-forming
Leaves generally crowded at branch tips, persistent for 2–3 years, < 10 cm, linear to oblanceolate, generally rigid, entire, scabrous; petiole indefinite
Inflorescence: head radiate, solitary; peduncles < 15 cm, naked; involucre 5–10 mm, hemispheric; phyllaries in 2–3 series, linear to ± ovate, acute to acuminate
Ray flowers 6–15; ligules 7–12 mm, yellow
Disk flowers 25–50; corollas 6–7.5 mm, funnel-shaped, yellow
Fruit 3.5–7 mm, generally densely silky; pappus of soft bristles
Species in genus: ± 5 species: w North America
Etymology: (Greek: narrow ear)


S. acaulis Nutt.

Leaves 2–10 cm, oblanceolate, generally 3-veined, glabrous to short-bristly, sometimes sticky
Inflorescence: involucre 6–10 mm
Ray flowers 6–15, 8–12 mm
Disk flowers: corollas 6–7.5 mm, tube glabrous
Fruit glabrous or densely silky; pappus white or tan
Ecology: Dry, rocky open scrub
Elevation: 1900–3200 m.
Bioregional distribution: Cascade Range, Sierra Nevada, Great Basin Floristic Province, Desert Mountains
Distribution outside California: to Washington, Montana, Wyoming, Colorado, Utah
Flowering time: May–Aug
Synonyms: Haplopappus a. (Nutt.) A. Gray
Horticultural information: TRY; DFCLT.

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