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86. Osteospermum Linnaeus, Sp. Pl. 2: 923. 1753; Gen. Pl. ed. 5, 395. 1754.
[Greek osteon, bone, and sperma, seed, alluding to hard fruits of original species]
John L. Strother
Perennials, subshrubs, or shrubs [annuals]. 5–150+ cm. Stems procumbent to erect [prostrate], glabrous or arachnose to piloso-hirtellous and/or stipitate-glandular. Leaves sessile or petiolate; blades orbiculate, elliptic, or oblong to oblanceolate, lanceolate, or linear, margins entire or denticulate [pinnately lobed], faces glabrous or sparsely arachnose and/or stipitate-glandular, often glabrate. Heads borne singly [in corymbiform to umbelliform arrays]. Involucres campanulate to hemispheric or broader, 5–20+ mm diam. Phyllaries 5–21+ in 1–2(–3+) series, lanceolate to lance-linear (apices ± attenuate). Receptacles flat to conic. Ray florets 10–21+ in ± 1 series; corollas whitish to purplish or yellow to orange, laminae ± oblong-elliptic to oblanceolate. Disc florets 12–50+, functionally staminate; corollas yellow or purplish, tubes shorter than the ± campanulate throats. Cypselae triquetrous-prismatic to clavate, often ± tuberculate or ridged and/or winged. x = 10.
Species ca. 75 (2 in the flora): introduced; Africa; widely cultivated, sometimes escaping and/or persisting.
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Leaf blades obovate or oblong to oblanceolate, 30–50(–100+) × 0–20(–40+) mm; ray corollas purplish to whitish |
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1 Osteospermum ecklonis |
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Leaf blades cuneate to clavate, 3–12(–20+) × 1–4+ mm; ray corollas yellow to orange. |
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2 Osteospermum spinescens |
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Lower Taxa
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