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.


Species in genus: 1 sp.: w US
Etymology: (Daniel C. Eaton, American botanist, 1834–1895)


E. nivea (D.C. Eaton) A. Gray

Annual 1–4 cm, densely tomentose
Stems congested
Leaves basal and alternate, very crowded, generally 1 cm or less, linear to obovate, entire
Inflorescence: heads radiate, solitary, terminal, subsessile, in flower ± concealed by leaves; peduncle in fruit elongating to ± 1 cm; involucre 4–5 mm diam, bell-shaped; phyllaries 8–12 in 1 series, 4–5 mm, linear-oblong, free, in fruit reflexed; receptacle flat, naked
Ray flowers 1 per phyllary, inconspicuous; ligules 1.5–2.5 mm, light yellow, often drying ± purple
Disk flowers many; corollas 2 mm, 4–5-lobed, yellow
Fruit ± 3 mm, oblanceolate, flattened; surfaces glabrous, black and shiny; margins ciliate with long, white hairs; pappus of 2 fringed scales 1–2 mm
Chromosomes: 2n=19
Ecology: Sandy soil
Elevation: 1350–2900 m.
Bioregional distribution: Great Basin Floristic Province
Distribution outside California: se Oregon, w Nevada
Flowering time: May–Jun
Horticultural information: TRY.

previous taxon | next taxon
bioregional map for EATONELLA%20nivea being generated

Retrieve Jepson Interchange Index to Plant Names entry for Eatonella nivea
Retrieve dichotomous key for Eatonella
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