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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.


Elizabeth McClintock

Perennial from stolons or rhizomes; juice milky
Leaves all basal, ± entire to dentate
Inflorescence: heads radiate, large, showy, solitary, scapose; peduncles long; phyllaries in 2 or more series, fused in basal half; receptacle flat or convex, pitted, naked
Ray flowers yellow or orange, variously marked, sterile, closing at night
Disk flowers many; corollas variously colored; stamen tips ovate-triangular, bases minutely sagittate; style slender below, thickened above a minutely hairy node, branches very short
Fruit obovate, covered with long hairs; pappus of slender scales ± hidden by hairs of achene
Species in genus: ± 16 species: especially s Africa
Etymology: (Theodorus of Gaza, died 1478, translator of works of Theophrastus)
Reference: [Hutchinson 1934 Curtis's Bot Mag Tab 9354]


G. linearis (Thunb.) Druce

Stems branching from base, spreading along ground, ± mat-like
Leaves in loose basal rosettes; petioles long, winged, gradually expanding upward; blades linear to lanceolate, entire or irregularly dentate, glabrous or nearly so above, white-woolly below
Inflorescence: heads 3.5–8 cm diam; phyllaries ± pouched at base
Ray flowers ± 20–21; ligules 4–5 cm, yellow or orange, generally with dark spot at base
Disk flowers: corollas ± 8 mm, reddish orange
Fruit 1–2 mm; pappus scales 7–8, 3–4 mm, hidden by the longer hairs of fruit
Ecology: Uncommon. Escape from cultivated in urban coastal areas, roadsides, waste places
Elevation: < 200 m.
Bioregional distribution: Central Coast, San Francisco Bay Area, South Coast
Distribution outside California: native to s Africa
Synonyms: G. longiscapa DC

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