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This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
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TREATMENT FROM THE JEPSON MANUAL |
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©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
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.
Annual, perennial herb
Stems 1many from base, slender, spreading or erect
Leaves simple, opposite or upper alternate, linear to narrowly elliptic, entire
Inflorescence: heads radiate, solitary or in few-headed cymes; peduncles slender, bracts 0few, linear; involucre hemispheric, appearing disk-shaped when pressed; phyllaries in 23 ± equal series, linear; receptacle conic, chaffy, scales linear-lanceolate
Ray flowers sterile; corollas yellow-orange; ligules showy, oblong, entire or nearly so
Disk flowers many; corollas yellow-orange; style tips triangular
Fruit oblanceolate, ± 4-angled, flat, glabrous; pappus 0
Species in genus: 6 species: North America
Etymology: (Greek: sun part, from showy heads)
Reference: [Yates & Heiser 1979 Proc Indiana Acad Sci 88:364372]
| Native |
Perennial from branched, woody rootstock
Stems 39 dm, slender, erect or spreading, glabrous or finely strigose or puberulent
Leaves 26 cm, linear to oblong or narrowly elliptic, ± stiffly hairy near base; tip obtuse to acute; surfaces strigose
Inflorescence: peduncles 515 cm; involucre 713 mm diam; phyllaries 47 mm, linear, strigose
Ray flowers 815; ligules 1520 mm, oblong to ovate
Disk flowers: corollas 3 mm; anthers yellow
Fruit 2 mm
Chromosomes: 2n=16
Ecology: Dry, rocky slopes, upland valleys
Elevation: 12002400 m.
Bioregional distribution: East of Sierra Nevada, Desert Mountains
Distribution outside California: to Utah, Arizona
Flowering time: MaySep
Synonyms: Viguiera m. (Nutt.) S.F. Blake var. n. (Nelson) S.F. Blake
Other vars. widespread in mtns of w North AmericaHorticultural information: TRY.
| YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps). |
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