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

229. Rudbeckia Linnaeus, Sp. Pl. 2: 906. 1753.

金光菊属 jin guang ju shu

Annuals, biennials, or perennials. Leaves alternate, rarely opposite; blade ovate to broadly ovate, unlobed or pinnatifid, rarely sessile and cordate. Capitula in terminal, paniculiform cymes, radiate, rarely discoid; involucre flat to reflexed, rarely hemispheric; phyllaries persistent, in 1 or 2(or 3) series; receptacle conical to columnar; paleae scarious, conduplicate or concave, ± enclosing florets. Ray florets neuter; corolla golden to lemon-yellow, orange, or reddish, or bicolored. Disk florets: corolla yellow to purplish, often bicolored. Achenes oblong to obpyramidal, 4-angled, glabrous or with some thick, multicellular trichomes on radial angles; pappus a small crown of minute scales, or of 2-4 small scales, or absent.

About 17 species: North America; two species (both introduced) in China.

Rudbeckia amplexicaulis Vahl, R. fulgida Aiton, R. fulgida var. speciosa (Wenderoth) Perdue, R. maxima Nuttall, and R. triloba Linnaeus are cultivated in China.

1 Leaf blades usually 1- or 2-pinnatifid or pinnately lobed, glabrous or hairy; disk corollas yellow to yellowish green.   1 R. laciniata
+ Leaf blades entire or serrate, with coarse stiff hairs; disk corollas yellowish green, distally brown-purple.   2 R. hirta

Lower Taxa


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