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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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ASTERACEAE

SUNFLOWER FAMILY

David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many 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)4–5; stamens 4–5, 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):1–28. See glossary p. 25 for illustrations of general family characteristics.

SOLIDAGO

GOLDENROD

John C. Semple

Perennial from woody caudex or rhizome, branched above
Leaves alternate, resinous, often sessile
Inflorescence: heads radiate, few–many, in ± flat-topped to panicle-like, often ± 1-sided clusters; involucre cylindric to bell-shaped (wider when dry); phyllaries in 3–5 graduated, overlapping series, midrib generally ± swollen, translucent
Ray flowers few–many; ligules yellow
Disk flowers few–many; corollas yellow, generally glabrous; style branches finely papillate, appendage triangular
Fruit obconic, compressed; pappus of 25–45 long-barbed bristles in 1 series
Species in genus: ± 150 species: especially North America (South America, Eurasia)
Etymology: (Greek: make-well, from purported medicinal value)
Reference: [Semple et al. 1990 Can J Bot 68:2070–2082]

Native

S. multiradiata Aiton

NORTHERN GOLDENROD

Plant ± (sub)glabrous, hairier above
Stems < 5 dm, from woody caudex
Leaves: lower cauline < 12 cm, ± linear to spoon-shaped; upper reduced, ± linear to ovate, subclasping, generally long-ciliate
Inflorescence flat- to round-topped; heads few–many; involucre 4–7 mm; phyllaries ± lanceolate, acute to long-acuminate, outer generally 2/3 to = length inner
Ray flowers 12–18; ligules 2–4 mm
Disk flowers 12–35; corollas 3–5 mm
Fruit 2–3 mm, ± sparsely strigose
Chromosomes: 2n=18,36
Ecology: Alpine slopes, meadows
Elevation: 2600–3700 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, Sierra Nevada, n East of Sierra Nevada, White and Inyo Mountains
Distribution outside California: to Alaska, arctic Canada, New Mexico
Flowering time: Jun–Sep
Horticultural information: IRR, DRN, SUN: 1, 2, 3, 4, 5, 6, 7, 14, 15, 16, 17, 18, 19, 20, 21.

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bioregional map for SOLIDAGO%20multiradiata being generated
 
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