|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.
Species in genus: 1 sp
Etymology: (Alice Eastwood, western American botanist, 18591953)
Shrub, appearing glabrous
Stems < or = 1 m, ± striate; new growth yellow to tan; bark of older growth gray-white, shredding with age
Leaves alternate, sometimes in axillary clusters below, < or = 4 cm, < or = 4 mm wide, ± linear, entire, minutely scabrous
Inflorescence: heads discoid, solitary or in open panicles; involucre bell-shaped, < 2 cm, < or = 2 cm wide; phyllaries in 24 series, narrow, whitish, tips acuminate, green; receptacle hemispheric, chaffy, scales readily deciduous
Flowers 3040; corollas < or = 6 mm, cylindric to funnel-shaped, yellow; style branch appendages lanceolate
Fruit < or = 2 mm, narrowly obconic, obscurely 34-angled, hairy, especially on angles; pappus of 58 scales, > fruit
Ecology: Banks and hillsides
Elevation: 601250 m.
Bioregional distribution: Tehachapi Mountain Area, s San Joaquin Valley, se San Francisco Bay Area, Inner South Coast Ranges
Horticultural information: TRY; DFCLT.