|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
previous taxon |
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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, 1many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1many 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)45; stamens 45, 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):128. See glossary p. 25 for illustrations of general family characteristics.
Annual, generally erect, with tack- or saucer-shaped glands (and generally more normal glandular hairs), generally aromatic
Leaves generally alternate, ± sessile, ± linear, entire, generally reduced upward; lower often deciduous by flower
Inflorescence: heads radiate, variously clustered; peduncle bracts generally with 1+ tack-like glands; each phyllary partly enfolding a ray fruit; chaff scales between ray and disk flowers, fused, forming a cup, or ± free
Ray flowers 16; ligules 313 mm, 3-lobed, white to rose or yellow, sometimes with red spot near base
Disk flowers 1many; corollas 29 mm, colored ± like ligules
Fruit: ray fruit ± 3-angled, inner surface ± flat, outer surface rounded to ± angled, pappus 0; disk fruit angled, base tapered, pappus 0 or generally of ± lanceolate (and sometime wider) scales
Species in genus: ± 9 species: especially CA (OR, NV)
Etymology: (Greek: cup gland)
See the CNPS Inventory for information about endangerment and rarity.
Stem < 3 dm, strigose and sparsely ± spreading-hairy; branches 0few
Leaves opposite, 15 cm, little reduced upward
Inflorescence dense; heads appearing whorled; peduncle bracts 410 mm, tack-like glands (0)1several; phyllaries and chaff scales 47 mm, outer surfaces minutely scabrous, often sparsely long-hairy, often with terminal tack-like gland
Ray flowers 24; ligules white to reddish, lobes ± equal
Disk flowers 420
Fruit: ray fruit generally smooth, glabrous; disk pappus scales ± 8, generally lanceolate, acuminate (often 24 shorter, blunt)
Ecology: UNCOMMON. Open, dry meadows, hillsides
Elevation: < 900 m.
Bioregional distribution: Cascade Range Foothills, n Sierra Nevada Foothills.