| TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY |
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.
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)
| Native |
Leaves 2–10 cm, linear-oblanceolate, 1–3-veined, loosely short-tomentose, ± glandular
Inflorescence: involucre 7–12 mm
Ray flowers 10–20, 8–12 mm
Disk flowers: corollas 6–7.5 mm, tube puberulent
Fruit short-hairy; pappus white
Ecology: Shallow, rocky soils
Elevation: ± 1500 m.
Bioregional distribution: s Modoc Plateau (Lassen Co.)
Distribution outside California: to Washington, Idaho, Montana