|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.
Perennial to shrub
Stems erect, often densely clustered
Leaves alternate, sessile, entire
Inflorescence: heads discoid, arrayed in ± dense cymes, peduncled or subsessile; involucre generally cylindric; phyllaries generally in 35 series (± 5 vertical ranks), free, overlapping, keeled; receptacle naked
Flowers 220 (often 5) per head; corollas generally yellow, lobes 0.53 mm, generally spreading; style branches long, slender, generally exserted
Fruit narrowly cylindric, ± 5-ridged, generally light brown; pappus of many white to brownish bristles
Species in genus: 16 species: sw Can to n Mex
Etymology: (Greek: golden shrub)
Closely related to (perhaps part of) Ericameria.
Subshrub or shrub, 19 dm
Stems prostrate to erect, white to green, tomentose
Leaves 17 cm, generally < 4 mm wide, thread-like to ± oblanceolate, ± glabrous to tomentose
Inflorescence: heads generally ± many, in long or rounded cymes; involucre 1018 mm, widely cylindric; phyllaries ± lanceolate, weakly 5-ranked, keeled, ± membranous, tips green
Flowers 518; corollas 812.5 mm; style appendage > stigma
Fruit 47 mm, hairy; pappus generally < corolla
Ecology: Dry places, generally open forest
Elevation: 7003700 m.
Bioregional distribution: Klamath Ranges, North Coast Ranges, Cascade Range, High Sierra Nevada, San Bernardino Mountains, Great Basin Floristic Province, Desert Mountains
Distribution outside California: to s Oregon, Colorado, Arizona
12 subspp. in w US.
Leaves 12.5 cm, green; glands 0
Inflorescence: heads generally 1(3), generally overtopped by leaves; phyllaries erect or spreading, straw-colored
Ecology: Common. Open subalpine forest, talus, alpine barrens
Elevation: 28003700 m.
Bioregional distribution: c High Sierra Nevada, n East of Sierra Nevada (Sweetwater Mtns)
Distribution outside California: w Nevada
Probably derived from subsp. nevadensis.