Osteospermum

Linnaeus

Sp. Pl. 2: 923. 1753.

,

Gen. Pl. ed. 5, 395. 1754.

Etymology: Greek osteon, bone, and sperma, seed, alluding to hard fruits of original species
Treatment appears in FNA Volume 19. Treatment on page 382. Mentioned on page 30, 379.
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 TaxonIllustrator 
FNA19 P41 Chrysanthemoides monifera.jpegChrysanthemoides monilifera
Dimorphotheca sinuata
Calendula officinalis
Osteospermum ecklonis
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey

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 ± oblongelliptic 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.

Distribution

Introduced; Africa, widely cultivated, sometimes escaping and/or persisting

Discussion

Species ca. 75 (2 in the flora).

Selected References

None.

Key

1 Leaf blades obovate or oblong to oblanceolate, 30–50(–100+) × 0–20(–40+) mm; ray corollas purplish to whitish Osteospermum ecklonis
1 Leaf blades cuneate to clavate, 3–12(–20+) × 1–4+ mm; ray corollas yellow to orange. Osteospermum spinescens

"broader" is not a number.

... more about "Osteospermum"
rounded;truncate +
scarious +
ovate +  and deltate +
penicillate +
indeterminate +  and determinate +
John L. Strother +
Linnaeus +
decurrent +
compound +  and simple +
oblong;oblanceolate lanceolate or linear +
tuberculate +
discernible +
zygomorphic +, actinomorphic +  and (3-)5-merous +
purplish +, yellow +, whitish +  and purplish or yellow +
tuberculate +
ridged +, triquetrous-prismatic +  and clavate +
fertile +  and bisexual +
Africa +, widely cultivated +  and sometimes escaping and/or persisting +
Greek osteon, bone, and sperma, seed, alluding to hard fruits of original species +
glabrate +, stipitate-glandular +, arachnose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
heterogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
campanulate;hemispheric +
less oblongelliptic +  and oblanceolate +
petiolate +  and sessile +
opposite +  and alternate +
deltate +
dentate +  and entire +
denticulate +  and entire +
2-carpellate +
5 +  and 21 +
Sp. Pl. +  and Gen. Pl. ed. +
1753 +  and 1754 +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
arachnose +  and piloso-hirtellous and/or stipitate-glandular +
appendaged +  and truncate +
papillate +
Compositae +
Osteospermum +
Asteraceae tribe Calenduleae +
campanulate +
shrub +  and subshrub +