| TREATMENT FROM THE JEPSON MANUAL (1993) |
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Jepson Interchange (more information) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
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, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many 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)4–5; stamens 4–5, 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):1–28. See glossary p. 25 for illustrations of general family characteristics.
Annual, ± woolly
Leaves alternate, entire to pinnately lobed
Inflorescence: heads solitary, radiate; involucre bell-shaped or hemispheric; phyllaries in 1 series, equal, fused at base, margins sometimes translucent; receptacle conic or hemispheric, naked
Ray flowers 1 per phyllary; ligules 5–10 mm, ± ovate, yellow, tip entire or slightly toothed
Disk flowers yellow; bases long-hairy
Fruit oblanceolate, 3–4-angled, ± compressed front-to-back; pappus 0
Species in genus: 3 species: CA
Etymology: (Greek: false Bahia )
Reference: [Johnson 1991 Novon 1:119–124]
| Native |
Plants 2–7 dm
Leaves 2–6 cm, triangular-ovate, generally 2-pinnately lobed; segments 1–5 mm wide
Inflorescence: peduncles 2–8 cm; involucre 6–9 mm; phyllaries ± 8, oblanceolate, fused at base; receptacle rounded-conic
Disk flowers ± 3 mm; lobes sparsely glandular
Fruit ± 3 mm
Chromosomes: 2n=16
Ecology: Grassland, bare dark clay
Elevation: 100–800 m.
Bioregional distribution: s Sierra Nevada Foothills (Kern Co.), se San Joaquin Valley (Fresno, Tulare cos.).Some ray flower tips reflect ultraviolet light. Threatened by agriculture, flood control.