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|
|TREATMENT FROM THE JEPSON MANUAL||
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Jepson Interchange (more information)
©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.
Species in genus: 1 sp.: Eurasia
Etymology: (Greek: feather-tipped, from pappus bristles)
Perennial 310 dm, from dark rhizome
Stems erect; branches ascending, ± cobwebby-tomentose
Leaves below middle 410 cm, oblong, 12-pinnately lobed, above middle 13 cm, linear to narrowly lanceolate, entire to toothed; blades glabrous to ± tomentose
Inflorescence: heads discoid in ± flat-topped or panicle-like clusters, leafy; involucre 1014 mm, ± ovoid; phyllaries in several unequal series, entire, ± soft-hairy, inner narrower, tips widely scarious; receptacle bristly; flowers ± 30
Flower: corolla ± 15 mm, white to blue, tube very slender, abruptly wider, lobes linear; anther bases short-tailed, tips oblong; style with minutely hairy, swollen node above, papillate above node, branches very short, tips triangular
Fruit 34 mm, obovoid, slightly compressed, glabrous; pappus bristles many, 68 mm, ± deciduous, barbed below, short-plumose above
Ecology: Fields, roadsides, cultivated ground
Elevation: < 1900 m.
Bioregional distribution: California (except wettest Northwestern California, driest Great Basin Floristic Province, Desert)
Distribution outside California: N.America; native to c Asia
Flowering time: MaySep
Synonyms: Centaurea r. L
|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).|