|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.
Perennial from fleshy taproot; caudices 1many
Leaves ± basal, few cauline, long-petioled; blade entire to 13-pinnately lobed
Inflorescence: heads 1few, radiate; peduncles long, bracts 0few; involucre hemispheric to bell-shaped; phyllaries in 24 series; receptacle flat; chaff folded around fruits
Ray flowers showy; ligules yellow
Disk flowers many; corollas yellow, tube short, throat cylindric to narrowly bell-shaped; style branches tapered
Fruit oblong, 34-angled; pappus 0
Species in genus: ± 12 species: w North America
Etymology: (Greek: balsam root, from sticky sap of taproot)
Reference: [Weber 1982 Phytologia 50:357359]
Horticultural information: TRY.
Stems 26 dm
Leaves: basal generally 2050 cm, blade lanceolate to elliptic, pinnately divided into linear to ovate segments, finely strigose, green to silvery canescent; cauline often 23 near base
Inflorescence: head 1; outer phyllaries 1340 mm, generally 510 mm wide, ovate-lanceolate, tip wide, flat, obtuse to acute, appressed to spreading, finely strigose, minutely glandular
Ray flowers: ligules 23 cm
Disk flowers: corollas 710 mm
Fruit 58 mm
Ecology: Dry slopes, valleys
Elevation: < 1800 m.
Bioregional distribution: e Cascade Range, Sierra Nevada Foothills, Sacramento Valley, San Francisco Bay Area, Modoc Plateau
Distribution outside California: nw Nevada
See the CNPS Inventory for information about endangerment and rarity.
Stems 26 dm, finely hairy, generally also glandular
Leaves 2040 cm; blade green to canescent
Inflorescence: outer phyllaries 2040 mm, generally 610 mm wide, finely strigose, minutely glandular
Fruit 78 mm
Ecology: Open grassy slopes, valleys
Elevation: generally < 1400 m.
Bioregional distribution: Sierra Nevada Foothills, Sacramento Valley, San Francisco Bay Area.