TREATMENT FROM THE JEPSON MANUAL (1993) |
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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. |
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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 from stout, taprooted caudex, generally ± unbranched
Leaves alternate, generally reduced upward; petiole generally << blade, often winged
Inflorescence: heads generally radiate, 1few, ± large; involucre hemispheric or bell-shaped; phyllaries ± many in 23 series, outer often ± leaf-like; receptacle ± convex; chaff scales ± linear, entire, generally ± hairy
Ray flowers (0)520; ligules yellow
Disk flowers many; corollas yellow, lobes short; anthers brown or yellow, tips triangular; style tips linear, tapered
Fruit: pappus 0 or crown of scales; ray achenes 3-angled; disk achenes 4-angled, sometimes ± compressed
Etymology: (Nathaniel J. Wyeth, US explorer, 18021856)
Reference: [Weber 1946 Amer Midl Naturalist 35:400452]
Native |
Plant 610 dm, densely soft-hairy
Leaves cauline; blades 820 cm, triangular-ovate, 13-veined, obtuse-cordate, acute
Inflorescence sometimes flat-topped, leafy-bracted; peduncles 412 cm; involucre hemispheric; phyllaries 2535 mm, lanceolate to ovate, acuminate, outer sometimes reflexed, generally not leaf-like, inner erect, short-rough-hairy
Ray flowers 1320; ligules 5060 mm
Disk flowers: corollas 12 mm
Fruit 1012 mm, glabrous or short-hairy above; pappus an uneven crown of scales, 13 mm
Chromosomes: 2n=38
Ecology: UNCOMMON. Open woodland, forest
Elevation: 10001400 m.
Bioregional distribution: c Sierra Nevada Foothills.