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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

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.

CALYCOSERIS

G. Ledyard Stebbins

Annual; sap milky
Stem 1–3 dm, branched, glabrous below, with tack-shaped glands above
Leaves: basal and lower cauline petioled, 1–2-pinnately divided into long, linear lobes, glabrous; cauline alternate, gradually or abruptly reduced, upper sessile
Inflorescence: heads ligulate, showy, solitary or in open, few-headed cymes; phyllaries in 2 series, scarious-margined, outer short, wide, inner many, linear; receptacle minutely bristly, otherwise naked
Flowers many; ligules yellow or white, readily withering
Fruit 5–6-ribbed, tapered to short beak; pappus white, of many slender bristles that fall together
Species in genus: 2 species: sw US, nw Mex
Etymology: (Greek: cup-like chicory)

Native

C. parryi A. Gray


Stem: glands dark colored
Leaf 3–12 cm
Inflorescence: heads 2–4 cm diam; involucre 10–15 mm
Flower: ligules yellow
Fruit 7–9 mm, smooth or nearly so; pappus 6–8 mm
Chromosomes: 2n=14
Ecology: Sandy to gravelly soils, washes, slopes
Elevation: < 2000 m.
Bioregional distribution: Tehachapi Mountain Area, Peninsular Ranges, East of Sierra Nevada, Desert
Distribution outside California: to Utah, Arizona, Baja California
Flowering time: Apr–May

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