|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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, 1many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1many 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)45; stamens 45, 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):128. See glossary p. 25 for illustrations of general family characteristics.
Annual to shrubs, glabrous or hairy; sap milky
Stems branched, 0.53 m
Leaves cauline or some basal, alternate
Inflorescence: heads ligulate; involucre cylindric; phyllaries in 2several series; receptacle naked
Flowers fewmany; ligules lavender, pink, or whitish, readily withering
Fruit linear, club-shaped, or oblong; pappus generally of 930 stiff, plumose bristles
Species in genus: 24 species: w North America
Etymology: (Greek: wreath division)
Reference: [Gottlieb 1972 Madroño 21:463481]
Annual, tap-rooted, rosette-forming species highly variable and complexly interrelated.
Annual 0.53 m, glabrous or ± tomentose
Stems: branches many, long
Leaves: basal rosette generally withered at flower; cauline oblong or wider above middle, margin wavy or shallowly lobed
Inflorescence: heads solitary or clustered on short, stiffly spreading branches; peduncles 37 mm; involucre 68 mm; outer phyllaries << inner, appressed or reflexed; inner phyllaries 69
Flowers 59; ligules white above, purplish pink below
Fruit 2.23.6 mm; pappus bristles plumose throughout, white
Ecology: Common. Dry, open slopes
Elevation: < 2100 m.
Bioregional distribution: California Floristic Province
Distribution outside California: sw Oregon, Nevada
Inflorescence: outer phyllaries strongly reflexed
Ecology: Habitats of sp.
Elevation: 01800 m.
Bioregional distribution: Outer South Coast Ranges, Southwestern California
Synonyms: var. tomentosa (Greene) Munz
Horticultural information: SUN, DRN: 7, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.