|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
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 or perennial herb, generally densely glandular, aromatic
Stems 1several, generally simple below, ± branched above
Leaves generally opposite below, alternate above, generally linear to lanceolate, entire to slightly toothed
Inflorescence: heads generally radiate, generally peduncled, fewmany; phyllaries generally 120, free, enclosing (and falling with) ray achenes; receptacle ± flat, generally glabrous; chaff scales generally ± fused, in ring between ray and disk flowers
Ray flowers generally 120, sometimes minute; ligules 23-lobed, generally yellow
Disk flowers 1many, sometimes staminate; corollas yellow or maroon; anther tips triangular-ovate; style tips linear to oblong, acute, bristly
Fruit club-shaped or obovoid; ray achenes compressed, thickened, or 3-angled (1 angle toward center of head), ridged, sometimes beaked; pappus 0 or of short scales; disk achenes ± symmetric; pappus 0 or of 410 scales or bristles
Species in genus: 21 species: w North America, sw South America
Recent taxonomic note: *See revised taxonomy of Baldwin 1999 Novon 9:462471.
Etymology: (Chilean name)
Reference: [Nelson & Nelson 1980 Brittonia 32:323325]
Perennial 1.57.5 dm
Stems ± bristly below, densely stalked-glandular above; glands golden to dark brown
Leaves 612 cm, opposite well up stem, fused at base, linear to oblanceolate, entire or ± serrate, bristly-strigose or soft-hairy; upper alternate, uppermost often much reduced
Inflorescence: heads few, long-peduncled, in open raceme-like or flat-topped cymes; involucre 46 mm, spheric to urn-shaped; phyllaries densely stalked-glandular, tip short, not flat; chaff scales sometimes fused only near base
Ray flowers 815; corolla tubes 11.5 mm, ligules 410 mm
Disk flowers 1030, staminate; corollas 45 mm; anthers yellow to brown
Fruit: ray achenes 35 mm, oblanceolate to obovate, moderately bowed, strongly compressed side-to-side, obscurely 5-veined, beaked or not, pappus 0 or a minute crown; disk ovaries 34 mm, hairy, pappus scales 58, 0.21 mm, fringed
Elevation: < 1300 m.
Bioregional distribution: Northwestern California, n High Sierra Nevada, San Francisco Bay Area, Outer South Coast Ranges, Peninsular Ranges (Agua Tibia Mtn)
Distribution outside California: to s British Columbia
Recent taxonomic note: *Anisocarpus madioides Nutt.
Horticultural information: DRN, IRR: 4 &SHD: 1, 5, 6, 7, 14, 15, 16, 17.