|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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 generally several from base
Leaves simple, alternate or opposite, sessile or petioled
Inflorescence: heads radiate or discoid, solitary or in few-headed, terminal cymes; peduncles long or short; involucre hemispheric or bell-shaped; phyllaries in several series, equal to very unequal; receptacle rounded to conic, chaffy; chaff scales entire or 3-lobed, folded around fruits
Ray flowers 0many, sterile; corolla yellow; ligules entire to 3-lobed
Disk flowers many; corollas yellow or orange; anther tips triangular; style tips triangular
Fruit ± flattened, obovate, glabrous or ± hairy; pappus of scales, generally 1 or more lanceolate
Species in genus: ± 150 species: New World
Etymology: (L.G.A. Viguier, 17901867, French physician, botanist)
Reference: [Shilling 1990 Madroño 37:149170]
Shrub < 2 m diam, short-rough hairy, covered with a varnish like resin throughoutSee the CNPS Inventory for information about endangerment and rarity.
Stems 613 dm, slender
Leaves generally alternate; petiole 010 mm; blade 15 cm, oblong to narrowly lanceolate, generally 3-veined, base rounded to truncate or hastate, tip obtuse to acute, margin entire to coarsely round-toothed or shallowly lobed, often ± rolled under, veins ± prominently raised on undersurface
Inflorescence: heads solitary or in ± flat-topped cymes; peduncles 0.55 cm with 1several, scattered, leafy or scale-like bracts; heads radiate; involucre 810 mm diam, hemispheric; phyllaries in 23 unequal series, 37 mm, ovate to lanceolate; chaff scales 5.57.3 mm
Ray flowers 513; ligules 612 mm
Disk flowers: corolla 3.54.5 mm
Fruit 24 mm, obovate; pappus of 2 fringed scales, 0.41 mm and 12 readily deciduous lanceolate scales, 1.73 mm
Ecology: Shrubby slopes
Elevation: 90750 m.
Bioregional distribution: s South Coast, sw Peninsular Ranges (sw San Diego Co.)
Distribution outside California: Baja California, w Sonora
Horticultural information: In cultivation.