| TREATMENT FROM THE JEPSON MANUAL (1993) |
previous taxon |
next taxon
Jepson Interchange (more information) |
|
|
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY |
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.
Annual or perennial herb, generally ± woolly or tomentose
Leaves alternate, sessile, entire
Inflorescence: heads disciform, many, small, ± sessile in clusters; involucres ± cylindric to spheric, often bell-shaped when pressed; phyllaries graded in several series, transparent to opaque at tips or scarious ± throughout; receptacle flat, naked
Pistillate flowers many, in several series; corollas very slender, minutely lobed, cream to pale yellow or tip reddish
Disk flowers few; corollas ± cylindric to funnel-shaped, whitish to purplish; anther bases short-tailed; style branches wider at tip, truncate
Fruit < 1 mm, oblong; pappus of many fine bristles, bases sometimes fused
Species in genus: ± 120 species: worldwide
Etymology: (Greek: lock of wool)
| Native |
Biennial or short-lived perennial herb 20–110 cm, much-branched above, scented or not, gray-tomentose throughout; basal leaf-tufts generally present
Leaves 15–80 mm, linear to (ob)lanceolate, sometimes decurrent
Inflorescence panicle-like; heads many; involucre 4.5–6 mm, ovoid; phyllaries white or pale straw-colored, outer ± tomentose (especially base)
Flowers 25–45; pistillate corollas 2.5–4 mm
Fruit: pappus bristles free
Ecology: Many habitats
Elevation: < 2500 m.
Bioregional distribution: North Coast, Klamath Ranges, Outer North Coast Ranges, High Cascade Range, n&c Sierra Nevada Foothills, High Sierra Nevada, Central Western California (except Inner South Coast Ranges), South Coast, n Channel Islands, San Bernardino Mountains, Peninsular Ranges, Great Basin Floristic Province, Desert Mountains
Distribution outside California: to British Columbia, Wyoming, Colorado, New Mexico, n Mexico
| Native |
Plant 20–70 cm, ± scented
Leaves 15–80 mm, linear to ± spoon-shaped (basal tufts); cauline ascending, upper decurrent
Inflorescence: branches short, ascending
Flowers 20–35; pistillate corollas 3–3.5 mm
Ecology: Dry woods, roadsides
Elevation: 1000–2500 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada, San Bernardino Mountains, San Jacinto Mountains, Modoc Plateau, White and Inyo Mountains
Distribution outside California: to British Columbia, Wyoming, Colorado