|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 perennial herb (subshrub)
Stems generally erect
Leaves alternate, generally entire
Inflorescence: heads generally radiate, 1many in loose, panicle-like or flat-topped clusters; involucre hemispheric; phyllaries narrowly lanceolate, in 2several equal to strongly graded series; receptacle flat to steeply conic, naked, smooth to shallowly pitted
Ray flowers (0) generally 10many; ligules generally white, pink, or blue (yellow)
Disk flowers many; corollas generally narrowly funnel-shaped, yellow; style tips 0.10.8 mm, ± triangular
Fruit 0.53 mm, generally ± oblong, compressed to ± cylindric, generally 2-ribbed, generally sparsely hairy; pappus (0) generally of 650 longer, inner bristles and shorter outer bristles, narrow scales, or short crown
Species in genus: ± 375 species: wordwide
Etymology: (Greek: early old age)
Reference: [Nesom 1992 Phytologia 72:157208]
Perennial 1030 cm, many-stemmed, from woody root and rhizome or caudex, decumbent to ascending, 0few-branched near stem tips, ± long-loose-spreading-hairy, generally densely glandular near heads
Leaves cauline, 1025 mm, narrowly oblong to oblanceolate, evenly sized and spaced, generally proximally long-ciliate
Inflorescence dense; heads discoid, 1015 mm diam; phyllaries strongly graded in 35 series, densely sessile-glandular
Fruit: pappus bristles 2235
Ecology: Rocky foothills to montane forest, sometimes on serpentine
Elevation: 3002700 m.
Bioregional distribution: Klamath Ranges, Outer North Coast Ranges, n Sierra Nevada Foothills, San Francisco Bay Area, Outer South Coast Ranges
Distribution outside California: sw Oregon
Herbage densely glandular-hairy; nonglandular hairs generally loose, often crinkly
Inflorescence: phyllary tips obviously wider, purplish
Ecology: Habitats of sp.
Elevation: 5002100 m.
Bioregional distribution: Outer North Coast Ranges, San Francisco Bay Area, Outer South Coast Ranges
Horticultural information: DRN, IRR: 1, 2, 4, 5, 6, 7, 14, 15, 16, 17.