|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
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.
See the CNPS Inventory for information about endangerment and rarity.
Stems 13 dm, densely tomentose
Leaves: basal 1030 cm, blade lanceolate to widely ovate, pinnately lobed, further divided into linear-oblong segments 23 mm wide, both surfaces whitish tomentose; cauline generally 2 near base, opposite
Inflorescence: head 1; outer phyllaries 1117 mm, 24 mm wide, oblong-lanceolate, acute, tomentose
Ray flowers: ligules 22.5 cm
Disk flowers: corollas 78 mm
Fruit 56 mm
Ecology: Open woods, grassy slopes
Elevation: 8001050 m.
Bioregional distribution: n Cascade Range (Shasta Valley, Siskiyou Co.).