TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
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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.
Native |
Shrub 115 dm
Stems generally erect, brittle, white (greener upward)
Leaves 17.5 cm, 110 mm wide, thread-like to oblong, flat or twisted, (gray-)green, ± sticky
Inflorescence: heads in dense, flat-topped or rounded cymes; involucre 510 mm, generally cylindric; phyllaries generally ± lanceolate, in ± 5 vertical ranks, keeled, yellow-green, ± sticky, tips obtuse to acute
Flowers 313; corolla 3.57.5 mm; style exserted, appendage generally >> stigma
Fruit 35 mm, hairy; pappus ± = corolla
Chromosomes: 2n=18, 36,54
Ecology: Sagebrush, pinyon/juniper woodland
Elevation: 9004000 m.
Bioregional distribution: Klamath Ranges, Cascade Range, Sierra Nevada, n Western Transverse Ranges, San Bernardino Mountains, Great Basin Floristic Province, Desert Mountains
Distribution outside California: to s Canada, Montana, New Mexico
Highly variable; 5 subspp. in w US.
Native |
Plant gray-green, densely puberulent
Leaves 13 cm, generally 12 mm wide, thread-like to ± oblanceolate
Flowers 47; corolla 4.55.5 mm
Chromosomes: 2n=18,36 (tetraploids larger, lower elevations)
Ecology: Sagebrush, pinyon/juniper, subalpine slopes
Elevation: 15003000 m.
Bioregional distribution: Sierra Nevada (e slope), San Bernardino Mountains, Great Basin Floristic Province, Desert Mountains
Distribution outside California: to s Idaho, Utah, n Arizona