Osteospermum
Asteraceae tribe Calenduleae
daisybush
procumbent to erect [prostrate], glabrous or arachnose to piloso-hirtellous and/or stipitate-glandular.
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.
cauline [rosulate]; usually alternate, sometimes opposite;
petiolate or sessile;
margins usually entire or dentate, sometimes lobed to dissected.
campanulate to hemispheric or broader, 5–20+ mm diam.
flat to conic.
flat to conic, epaleate (sometimes bristly-setose).
10–21+ in ± 1 series;
corollas whitish to purplish or yellow to orange, laminae ± oblong-elliptic to oblanceolate.
in 1–2+ series (more in horticultural “doubles”), pistillate, fertile [styliferous and sterile or neuter];
corollas usually yellow to orange and/or cyanic to white (abaxial and adaxial faces often different colors).
12–50+, functionally staminate;
corollas yellow or purplish, tubes shorter than the ± campanulate throats.
usually functionally staminate, sometimes bisexual and fertile;
corollas yellow, orange, or cyanic (sometimes combinations within corollas), lobes 5, ± deltate (tips sometimes terete or dilated);
anther bases ± tailed, apical appendages ovate to deltate;
styles abaxially papillate (at least near tips), branches sometimes barely discernible (0.5–1 mm), adaxially stigmatic in 2 lines from bases to apices, apices rounded to truncate, appendages penicillate or essentially none.
5–21+ in 1–2(–3+) series, lanceolate to lance-linear (apices ± attenuate).
persistent, in (1–)2(–3) series, distinct [connate], usually ± equal, usually herbaceous (sometimes fleshy), margins and/or apices ± scarious.
0 (peduncular bractlets sometimes intergrade with phyllaries).
borne singly [in corymbiform to umbelliform arrays].
heterogamous (radiate), borne singly or in ± corymbiform arrays.
triquetrous-prismatic to clavate, often ± tuberculate or ridged and/or winged.
usually polymorphic within heads (straight, arcuate, contorted, or ± coiled), ± columnar to prismatic, sometimes obcompressed, compressed, or flattened, sometimes ± beaked, bodies usually tuberculate, ridged, and/or winged (usually glabrous; blue-black and drupelike in Chrysanthemoides);
pappi 0 [bristles].
= 10.
Osteospermum
Asteraceae tribe Calenduleae
Species ca. 75 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Genera ca. 8, species 100+ (4 genera, 7 species in the flora).
Plants of Dimorphotheca cuneata (Thunberg) Lessing, a native of southern Africa, have been collected outside cultivation in Arizona (Gila County, ca. 1000 m): subshrubs or shrubs to 100 cm, leaves cuneate to obovate, 1–2(–3)cm, margins dentate to denticulate, faces ± glutinous, phyllaries usually 13, 6–9 mm, ray corollas abaxially bluish to violet, adaxially white, disc cypselae obovate to nearly orbiculate, 10 mm.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blades obovate or oblong to oblanceolate, 30–50(–100+) × 0–20(–40+) mm; ray corollas purplish to whitish | O. ecklonis |
1. Leaf blades cuneate to clavate, 3–12(–20+) × 1–4+ mm; ray corollas yellow to orange. | O. spinescens |
1. Shrubs or trees; cypselae fleshy (drupelike) | Chrysanthemoides |
1. Annuals, perennials, or shrubs; cypselae not fleshy (often tuberculate or ridged and/or winged) | → 2 |
2. Disc florets bisexual (some or all fertile) | Dimorphotheca |
2. Disc florets all functionally staminate | → 3 |
3. Cypselae arcuate to ± coiled, abaxially tuberculate, sometimes winged | Calendula |
3. Cypselae triquetrous-prismatic to clavate, ± tuberculate and/or winged | Osteospermum |
WildflowerSearch
iNaturalist
USDA Plants Database
