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.
 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 +