|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
For up-to-date information about California vascular plants, visit the Jepson eFlora.
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, perennial herb, shrubs
Stems slender to stout and fleshy
Leaves simple to several times pinnately dissected, basal or cauline, opposite or less commonly alternate, sessile or petioled
Inflorescence: heads radiate, solitary or in fewmany-headed cymes; peduncles short to long; involucre hemispheric or bell-shaped; phyllaries in 2 series, outer ± spreading, thick, green, inner thin, membranous; receptacle flat to rounded, chaffy; scales flat, scarious
Ray flowers fertile or sterile; ligules generally yellow, showy
Disk flowers many; corollas 45-lobed, yellow; style tips truncate to long-tapered
Fruit: ray and disk achenes alike or different, generally compressed front-to-back, often winged; pappus 0 or of 2 awns or scales
Species in genus: ± 114 species: Am, Africa
Etymology: (Greek: bedbug-like, from fruit)
Reference: [Smith 1984 Sida 10:276289]
Stem: trunk generally 12 m, 410 cm diam, erect, fleshy, few-branched
Leaves alternate, tightly clustered at stem tips; petiole 37 cm; blade 325 cm, 34-pinnate into fleshy, linear segments 15 cm, 0.51.5 mm wide
Inflorescence: heads many in cymes; peduncles 620 cm, leafy-bracted; involucre bell-shaped; outer phyllaries 512, 520 mm, lanceolate to oblong; inner phyllaries 1015, 1015 mm, oblong-ovate, obtuse to acute; chaff scales 810 mm, linear, free from disk achenes
Ray flowers 1016, fertile; ligules 2030 mm, elliptic to oblong, yellow
Disk flowers many; corollas 66.5 mm, yellow
Fruits alike, 56 mm, oblong to obovate, dark brown, ± glabrous; wing narrow, thin; pappus 0
Ecology: Shrubby hillsides, coastal dunes, seabluffs
Elevation: 1560 m.
Bioregional distribution: s Central Coast, n&c South Coast, Channel Islands
Horticultural information: DRN, SUN, DRY: 14, 15, 16, 17, 19, 20, 21, 22, 23, 24; summer dormant.
|YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).|