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

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

ASTERACEAE

SUNFLOWER FAMILY

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.

AGOSERIS

Kenton L. Chambers

Annual or perennial herb, generally scapose; sap milky
Leaves ± basal, narrow, entire to pinnately lobed
Inflorescence: head 1, ligulate, erect, 8–60 mm; phyllaries subequal or overlapping in 2–4 series, inner often elongated in fruit; receptacle flat, naked
Flowers generally many; ligules = to >> involucre, yellow or red-orange, readily withering, outer ± reddish below
Fruit linear to fusiform, ± 10-ribbed; beak often = or >> body; pappus of many fine, simple, white bristles
Species in genus: ± 10 species: Am
Etymology: (Greek: goat chicory)
Reference: [Q. Jones 1954 PhD Harvard U.]
Like Taraxacum but closely related to Nothocalais. Hybrids and polyploidy complicate variation in some species

Native

A. glauca (Pursh) Raf.

Perennial 3–50 cm, decumbent to erect, generally ± tomentose
Leaves linear to (ob)lanceolate, acute to long-tapered, entire to lobed
Inflorescence: involucre 10–25 mm; phyllaries overlapping in several series, outer ovate and acute to lanceolate and long-tapered, glabrous to ciliate or soft-hairy
Flowers many, > involucre; ligules yellow
Fruit: body 4–10 mm, linear-fusiform; ribs straight, smooth; beak < body
Ecology: Sagebrush scrub, coniferous forest, meadows, alpine slopes
Elevation: 1400–3800 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada, Great Basin Floristic Province
Distribution outside California: to w Canada, north-central US, New Mexico

previous taxon | next taxon
bioregional map for AGOSERIS%20glauca being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Agoseris glauca
Retrieve dichotomous key for Agoseris
Retrieve multiple-entry key (MEKA) for Agoseris
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
Glossary


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