Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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ASTERACEAE

SUNFLOWER FAMILY

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.

GAILLARDIA

INDIAN-BLANKET

Annual or perennial herb, generally rough-hairy
Leaves alternate, reduced upward; blades oblong to ± ovate in CA, entire to pinnately lobed
Inflorescence: heads generally radiate, 1 or in leafy cyme; peduncles slender, bracts 0–few; involucre hemispheric; phyllaries in 2–3 series, generally reflexed in fruit; receptacle rounded to spheric, chaffy or bristly
Ray flowers 0–many, sometimes sterile; ligules showy, yellow to red, purple or multicolored, generally deeply 3-lobed
Disk flowers many; corollas yellow to red or purple, generally long-hairy; style tips long, tapered
Fruit obpyramidal, generally hairy; pappus of 5–10 scales, often awn-tipped
Species in genus: ± 28 species: Am
Etymology: (Gaillard de Merentonneau, French botanist, 1700's)

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bioregional map for GAILLARDIA being generated
 
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