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.



Guy L. Nesom

Annual to perennial herb (subshrub)
Stems generally erect
Leaves alternate, generally entire
Inflorescence: heads generally radiate, 1–many in loose, panicle-like or flat-topped clusters; involucre hemispheric; phyllaries narrowly lanceolate, in 2–several equal to strongly graded series; receptacle flat to steeply conic, naked, smooth to shallowly pitted
Ray flowers (0) generally 10–many; ligules generally white, pink, or blue (yellow)
Disk flowers many; corollas generally narrowly funnel-shaped, yellow; style tips 0.1–0.8 mm, ± triangular
Fruit 0.5–3 mm, generally ± oblong, compressed to ± cylindric, generally 2-ribbed, generally sparsely hairy; pappus (0) generally of 6–50 longer, inner bristles and shorter outer bristles, narrow scales, or short crown
Species in genus: ± 375 species: wordwide
Etymology: (Greek: early old age)
Reference: [Nesom 1992 Phytologia 72:157–208]


E. inornatus A. Gray

Perennial 1–9 dm, from woody taproot, decumbent to ascending, branched near stem-tips, generally ± spreading-short-hairy below, (sub)glabrous above
Leaves cauline, 1–6 cm, narrowly oblanceolate to oblong, glabrous or stiff-hairy, generally ciliate
Inflorescence flat-topped; heads discoid, 5–many; disk 7–12 mm diam; phyllaries strongly graded in 3–5 series, sometimes sparsely glandular
Fruit: pappus bristles 28–60
Ecology: Chaparral to pine/fir woods, lava beds
Elevation: generally 150–2300 m.
Bioregional distribution: Northwestern California, Cascade Range, Sierra Nevada, Modoc Plateau
Distribution outside California: to Washington, nw Nevada


var. calidipetris G.L. Nesom

Stems 10–20 cm, decumbent to ascending, spreading- or reflexed-hairy below middle
Leaves: middle and lower stiffly spreading-hairy and -ciliate
Inflorescence: inner phyllaries 5–6.5 mm
Ecology: Loose sand, lava beds, depression edges, to pine/fir woods
Elevation: 1100–1400 m.
Bioregional distribution: Cascade Range, Modoc Plateau.
See the CNPS Inventory for information about endangerment and rarity.
previous taxon | next taxon
bioregional map for ERIGERON%20inornatus%20var.%20calidipetris being generated

Retrieve Jepson Interchange Index to Plant Names entry for Erigeron inornatus var. calidipetris
Retrieve dichotomous key for Erigeron
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