|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, perennial herb, glabrous or hairy
Stem generally branched, generally erect, < 60 cm
Leaves opposite, < 20 cm, entire to pinnately cut
Inflorescence: heads radiate, solitary or in cymes; phyllaries in 1 or 2 series, free or partly fused; receptacle narrowly conic to hemispheric, naked, smooth, pitted, or rough
Ray flowers 421; ligules generally yellow
Disk flowers generally many; corollas generally 5-lobed, generally yellow; anther tips acuminate to triangular; style tips triangular or round, generally hair-tufted
Fruit < 5 mm, cylindric to obovoid, black or gray; pappus of awns, scales, or 0
Species in genus: 17 species: w North America, Chile
Etymology: (Greek: female pupil of Plato)
Reference: [Ornduff 1966 Univ Calif Publ Bot 40:192]
Generally self-incompatible (cross-pollinated).
Perennial (rarely annual) < 40 cm
Stem simple or branched, hairy
Leaves 221 cm, linear to oblong, entire, glabrous to densely hairy
Inflorescence: involucre 914 mm, bell-shaped to depressed-hemispheric; phyllaries 1316, free, hairy; receptacle conic, rough, generally glabrous
Ray flowers 816; ligules 516 mm
Disk flowers many; anther tips triangular to sublanceolate; style tips triangular, hair-tufted
Fruit < 4 mm, linear to narrowly club-shaped, generally glabrous; pappus of < 4 narrow awns, or 0
Ecology: Grasslands, dunes, woods
Elevation: < 500 m.
Bioregional distribution: North Coast, Central Coast.Sspp. intergrade.
Roots fibrous, not clusteredSee the CNPS Inventory for information about endangerment and rarity.
Stem generally decumbent, generally branched at base, < 40 cm
Leaves > 2 mm wide
Ecology: Grasslands, dunes along immediate coast
Elevation: < 500 m.
Bioregional distribution: North Coast, Central Coast (2 stations)
Horticultural information: DRN, SUN, IRR: 5, 14, 15, 16, 17, 22, 23, 24.