| 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.
Annual to perennial herb
Stems 0 to erect, < 30 cm
Leaves alternate, entire, petioled
Inflorescence: head, radiate generally solitary; involucre conic to hemispheric; phyllaries in 2–6 series, outer generally < inner, free, margins scarious to ciliate; receptacle flat, naked
Ray flowers many; ligules white, pink, blue, or yellow
Disk flowers many; corollas ± yellow; style branches flat, tip hairy
Fruit ± compressed, brown, glabrous to hairy; pappus of minutely barbed, generally flat bristles (ray fruits sometimes also with small outer series)
Species in genus: 21 species: w North America
Etymology: (D. Townsend, amateur US botanist, 1787–1858)
Reference: [Reveal 1970 GB Naturalist 30:23–52]
Some species reproduce by asexual seed.
| Native |
Biennial or perennial herb < 5 cm; caudex taprooted
Leaves basal, generally 1–1.5 cm, ± narrowly obovate, rounded, entire, long-soft-woolly
Inflorescence: phyllaries ± subequal, lanceolate, ± acuminate, scarious-margined, ± long-hairy
Ray flowers: ligules white to pink or violet
Fruit short-hairy; pappus readily deciduous
Chromosomes: 2n=18
Ecology: Gravel slopes
Elevation: 3200–3500 m.
Bioregional distribution: n East of Sierra Nevada (Mono Co.)
Distribution outside California: to sw Canada, Wyoming, Colorado
Flowering time: May–Jun