Dimorphotheca pluvialis

(Linnaeus) Moench

Methodus, 585. 1794.

Introduced
Basionyms: Calendula pluvialis Linnaeus Sp. Pl. 2: 921. 1753
Treatment appears in FNA Volume 19. Treatment on page 381.

Annuals, 5–20 (–40+) cm. Leaf-blades narrowly oblong or oblanceolate to linear, 15–50 (–100+) × 3–15 (–25+) mm, margins usually dentate to pinnatifid, sometimes entire. Peduncles (3–) 5–12+ cm. Phyllaries 6–12+ mm. Ray corolla laminae abaxially white to ochroleucous or yellowish (often marked with blue to purple), adaxially mostly whitish (often blue to purplish at bases and/or apices), 20–30+ mm. Disc-florets 30–50+; corollas whitish to yellowish, usually bluish to purplish distally, 4–6 mm (lobe apices acute, terete, or dilated). Ray cypselae 4–6 mm; disc cypselae 6–8 mm. 2n = 18.


Phenology: Flowering Mar–Apr.
Habitat: Disturbed places
Elevation: 0–100 m

Distribution

V19-617-distribution-map.gif

Introduced; Calif., South Africa

Discussion

Plants with “intermediate” ray-corolla colors have been treated as hybrids between Dimorphotheca pluvialis and D. sinuata (e.g., N. T. Norlindh 1943).

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Dimorphotheca pluvialis"
scarious +
ovate +  and deltate +
penicillate +
indeterminate +  and determinate +
John L. Strother +
(Linnaeus) Moench +
decurrent +
Calendula pluvialis +
compound +  and simple +
oblanceolate;linear +
tuberculate +
discernible +
zygomorphic +, actinomorphic +  and (3-)5-merous +
whitish +  and yellowish usually bluish +
whitish +, abaxially white +  and ochroleucous or yellowish +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
tuberculate +
compressed +, ridged +, triquetrous-prismatic +  and clavate +
fertile +  and bisexual +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Calif. +  and South Africa +
0–100 m +
stipitate-glandular +  and arachnose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed places +
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 +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
petiolate +  and sessile +
opposite +  and alternate +
deltate +
usually dentate +  and pinnatifid +
2-carpellate +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Flowering Mar–Apr. +
15 +  and 21 +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Introduced +
appendaged +  and truncate +
papillate +
Compositae +
Dimorphotheca pluvialis +
Dimorphotheca +
species +
campanulate +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
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 /> (20 cm200 mm <br />0.2 m <br />) +
tree +  and shrub +