|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 to perennial herb
Stems 15, 115 dm, ± hairy, glandular
Leaves alternate; petioles generally ciliate; blades generally ± oblanceolate, entire to lobed, ± reduced upward
Inflorescence raceme-like; heads radiate, 1many; bracts ± narrowly lanceolate; involucre hemispheric to obconic; phyllaries many, in 23 series, linear to obovate, green, ± glandular; receptacle naked
Ray flowers: ligules yellow to red
Disk flowers many; corollas 59 mm, yellow to orange, generally glabrous
Fruit 410 mm, linear to club-like, black, ± hairy; pappus scales generally 2 pairs, 410 mm, generally deeply cut, generally translucent
Species in genus: ± 8 species: w US
Etymology: (G.W. Hulse, US Army surgeon, botanist, 18071883)
Reference: [Wilken 1977 Madroño 24:4855]
Biennial 412 dm, ± woolly, ± glandularSee the CNPS Inventory for information about endangerment and rarity.
Leaves: basal 610 cm, entire
Inflorescence: heads ± 20 mm, 20 mm wide; phyllaries 914 mm, linear-lanceolate, long-acuminate
Ray flowers 2240; corollas 1520 mm, 35 mm wide, yellow, puberulent
Fruit 46 mm, silky-hairy; pappus scales < 2 mm, ± equal
Ecology: Open sites
Elevation: 10002000 m.
Bioregional distribution: s Peninsular Ranges (Laguna, Cuyamaca mtns, San Diego Co.).