Jepson Flora Project: Jepson Interchange |
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TREATMENT FROM THE JEPSON MANUAL (1993) |
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Jepson Interchange (more information) |
©Copyright 1993 by the Regents of the University of California
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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.
Perennial to shrub, dioecious, sometimes aromatic, often ± sticky-resinous
Stems erect, channeled
Leaves cauline, alternate, simple, reduced to bracts above
Inflorescence: heads discoid and disciform, borne in terminal or lateral racemes, panicles or cymes; phyllaries overlapping in several series; receptacle naked or chaffy
Disk flowers generally many, functionally staminate; corollas white to pink-tinged; ovary much reduced; pappus of bristles < involucre
Pistillate flowers generally many; corollas thread-like, ± whitish
Fruit ± cylindric, 410-ribbed; pappus of many bristles > involucre
Species in genus: 250400 species: Am
Etymology: (Latin: Bacchus, god of wine)
[Boldt 1989 Baccharis TX Agric Exp Sta, College Station]
Native |
Shrub < 3 m, glabrous, generally sticky
Stems prostrate to erect; branches spreading or ascending
Leaves barely petioled, 855 mm, oblanceolate to obovate, entire to toothed; principal veins 3
Inflorescence: heads in a leafy panicle; involucre hemispheric to bell-shaped, of staminate heads 3.25 mm, of pistillate heads 3.55 mm; phyllaries in 46 series, lanceolate to ovate, glabrous, tip rounded to acute; receptacle convex to conic, honeycombed, chaff 0
Staminate flowers (13)2034; corollas 34.2 mm; pappus 34.2 mm
Pistillate flowers 1943; corollas 2.53.5(4.5) mm
Fruit 12 mm, glabrous; ribs 810; pappus 5.59 mm
Chromosomes: 2n=18
Ecology: Coastal bluffs to oak woodland, sometimes on serpentine
Elevation: 0750(1500) m.
Bioregional distribution: Northwestern California, Sierra Nevada Foothills, w Central Western California, South Coast, Channel Islands, Western Transverse Ranges, Peninsular Ranges
Distribution outside California: Oregon, n Mexico
Synonyms: var. consanguinea (DC.) Kuntze
Variable; erect plants are generally mixed (and intergrade completely) with prostrate plantsHorticultural information: DRN: 5, 15, 16, 17 &IRR: 7, 8, 9, 14, 18, 19, 20, 21, 22, 23, 24; male CVS, including GRCVR.