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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Rudbeckia

1. Rudbeckia laciniata Linnaeus, Sp. Pl. 2: 906. 1753.

金光菊 jin guang ju

Perennials, 50-200 cm tall. Leaves green; blade broadly ovate to lanceolate, all but distalmost ones 1- or 2-pinnatifid or pinnately compound; leaflets or lobes 3-11, glabrous or hairy, base cuneate to attenuate or cordate, margin entire or dentate, apex acute to acuminate; basal leaves petiolate, 15-50 × 10-25 cm; cauline leaves petiolate or sessile, mostly lobed to pinnatifid, sometimes not lobed, 8-40 × 3-20 cm. Capitula 2-25 in loose, corymbiform arrays; phyllaries 8-15, ovate to lanceolate, glabrous or hairy, margin mostly ciliate; receptacle hemispheric or ovoid to globose; paleae 3-7 mm, abaxially densely hairy at apex, apex truncate or rounded. Ray florets 8-12; corolla limb elliptic to oblanceolate, 15-50 × 4-14 mm, abaxially hairy. Disk 0.9-3 × 1-2.3 cm; disk florets numerous; corolla yellow to yellowish green, 3.5-5 mm; style branches 1-1.5 mm, apex acute to rounded. Achenes 3-4.5 mm; pappus coroniform or of 4 scales, to 1.5 mm. Fl. Jul-Sep.

Widely cultivated and naturalized in China [native to North America].


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