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.



Geraldine A. Allen

Annual or perennial herb from caudex or rhizome
Stem generally erect, 1–20 dm
Leaves basal, cauline, or both, alternate, generally entire; basal generally petioled
Inflorescence: heads generally radiate, solitary or in a cyme or panicle; involucre obconic to hemispheric; phyllaries in 2–6 series, outer generally < inner, free, at least inner with pale, papery margins; receptacle ± flat, naked
Ray flowers 0–many; corolla violet to pink or white
Disk flowers many; corolla and anthers generally yellow, tube generally < throat; anther tips ± triangular; style branches flat on inner face, base ± warty, tip acute, hairy
Fruit generally rounded, ± ribbed, ± brown; pappus of bristles, white to brownish
Species in genus: ± 250 species: North America, Eurasia, Africa
Etymology: (Greek: star)
Reference: [Allen 1984 Syst Bot 9:175–191]
Recent taxonomic note: *See also revised taxonomy of Nesom 1994 Phytologia 77:141–297.


A. chilensis Nees

Perennial; rhizomes elongate
Stems 4–10 dm, hairy above
Leaves basal and cauline (basal 0 at flower), ± sessile, ± oblanceolate, acute, entire to finely serrate, ± hairy
Inflorescence: heads in a cyme; phyllaries oblong to ovate, outer green ± to base, obtuse, inner pale-margined, ± acute
Ray flowers many; corollas 8–12 mm, violet
Fruit hairy
Chromosomes: 2n=48,64
Ecology: Grasslands, salt marshes, disturbed places
Elevation: < 500 m.
Bioregional distribution: w&c Northwestern California, w&c Central Western California, n South Coast, n Channel Islands
Distribution outside California: to British Columbia
Horticultural information: 4, 5, 6 &IRR: 1, 2, 3, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; also STBL; INV.

previous taxon | next taxon
bioregional map for ASTER%20chilensis being generated

Retrieve Jepson Interchange Index to Plant Names entry for Aster chilensis
Retrieve dichotomous key for Aster
Retrieve multiple-entry key (MEKA) for Aster
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