Dimorphotheca

Moench

Methodus, 585. 1794.

Common names: African daisy Cape marigold
Etymology: Greek di- , two, morphe, shape, and theca, case or container, alluding to two forms of cypselae within each head
Treatment appears in FNA Volume 19. Treatment on page 380. Mentioned on page 30, 379.

Annuals [perennials, subshrubs, shrubs], 5–40 [150+] cm. Stems procumbent to erect [prostrate], glabrous or arachnose to piloso-hirtellous and/or stipitate-glandular. Leaves ± sessile or petiolate; blades oblong or oblanceolate to linear, margins entire or dentate [pinnately lobed], faces sparsely arachnose and/or stipitate-glandular. Heads borne singly. Involucres campanulate to hemispheric or broader, 5–20+ mm diam. Phyllaries 15–21 in 2 (–3) series, lanceolate to lance-linear. Receptacles flat to conic. Ray-florets 10–21+ in ± 1 series; corollas usually yellow to orange or white, sometimes purplish abaxially and/or at bases or apices, laminae oblongelliptic to oblanceolate. Disc-florets 15–50+, bisexual, all or mostly fertile (inner sometimes functionally staminate); corollas whitish or yellow, red, or purplish, tubes much shorter than ± campanulate throats (lobes sometimes with terete or dilated appendages). Cypselae (ray) triquetrous-prismatic to clavate, ± tuberculate or ridged; (disc) compressed, often winged, ± smooth. x = 9.

Distribution

Introduced; s Africa

Discussion

Species 7–18+ (2 in the flora).

Selected References

None.

Key

1 Ray corollas mostly yellow to orange adaxially Dimorphotheca sinuata
1 Ray corollas mostly whitish adaxially Dimorphotheca pluvialis

"broader" is not a number.

... more about "Dimorphotheca"
scarious +
ovate +  and deltate +
penicillate +
indeterminate +  and determinate +
John L. Strother +
Moench +
decurrent +
compound +  and simple +
oblanceolate;linear +
tuberculate +
discernible +
African daisy +  and Cape marigold +
zygomorphic +, actinomorphic +  and (3-)5-merous +
purplish +, red +, yellow +, whitish +, usually yellow +  and orange or white +
tuberculate +
compressed +, ridged +, triquetrous-prismatic +  and clavate +
fertile +  and bisexual +
s Africa +
Greek di- , two, morphe, shape, and theca, case or container, alluding to two forms of cypselae within each head +
stipitate-glandular +  and arachnose +
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 +
oblongelliptic +  and oblanceolate +
petiolate +  and sessile +
opposite +  and alternate +
deltate +
dentate +  and entire +
lobed +  and dissected +
2-carpellate +
15 +  and 21 +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Dimorphotheca +
Asteraceae tribe Calenduleae +
campanulate +
150 cm1,500 mm <br />1.5 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
tree +  and shrub +