Annual or perennial herbs or shrubs, with glandular and eglandular hairs. Stems erect or ascending, simple or branched. Leaves alternate, simple, toothed to pinnatifid, rarely entire, commonly scabrous and glandular-hairy. Capitula radiate, terminal, solitary or corymbose, on short to long penduncles; involucre broadly campanulate, uniseriate; bracts linear to lanceolate, ± equal; receptacle flat, becoming ± convex. Ray florets uniseriate, female and fertile (in Australia) or sterile or neuter; ligules patent, concolorous or discolorous, white, purple, yellow or orange, adaxially darker. Disc florets bisexual or inner ones functionally male, tubular, 5-toothed; lobes yellowish adaxially, dark purple abaxially; styles filiform, shortly 2-lobed. Achenes dimorphic; outermost ray achenes (when developed) triquetrous, or ±terete, winged or not, sometimes tuberculate; disc achenes flattened, with thickened margins. [This description from Ghafoor (2015: 321–322) excluded several species that were treated as Osteospermum -Editor, 3 August 2020]
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