Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



David J. Keil, Family Editor and author, except as specified

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.



David J. Keil and Charles E. Turner

Species in genus: 1 sp.: Eurasia
Etymology: (Greek: feather-tipped, from pappus bristles)


A. repens (L.) DC.


Perennial 3–10 dm, from dark rhizome
Stems erect; branches ascending, ± cobwebby-tomentose
Leaves below middle 4–10 cm, oblong, 1–2-pinnately lobed, above middle 1–3 cm, linear to narrowly lanceolate, entire to toothed; blades glabrous to ± tomentose
Inflorescence: heads discoid in ± flat-topped or panicle-like clusters, leafy; involucre 10–14 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 3–4 mm, obovoid, slightly compressed, glabrous; pappus bristles many, 6–8 mm, ± deciduous, barbed below, short-plumose above
Chromosomes: 2n=26
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: May–Sep
Synonyms: Centaurea r. L

previous taxon | next taxon
bioregional map for ACROPTILON%20repens being generated

Retrieve Jepson Interchange Index to Plant Names entry for Acroptilon repens
Retrieve dichotomous key for Acroptilon
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California