Calendula

Linnaeus

Sp. Pl. 2: 921. 1753.

,

Gen. Pl. ed. 5, 393. 1754.

Common names: Pot marigold
Etymology: Latin calends, first day of the month, and -ula, tendency perhaps meaning “through the months” and alluding to ± year-round flowering
Treatment appears in FNA Volume 19. Treatment on page 381. 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

Annuals, perennials [subshrubs], 5–50 (–70+) cm. Stems procumbent to erect, glabrous or arachnose and/or stipitate-glandular. Leaves sessile or petiolate; blades elliptic, obovate, or oblong to oblanceolate, spatulate, or linear (bases sometimes clasping), margins entire or denticulate, faces sparsely arachnose and/or stipitate-glandular. Heads borne singly. Involucres campanulate to hemispheric or broader, 10–30+ mm diam. Phyllaries 13–40+ in 2+ series, lanceolate to lance-linear. Receptacles flat. Ray-florets 13–50 (–100+) in 1–3+ series; corollas yellow to orange, laminae linear to oblanceolate. Disc-florets 20–60 (–150+), functionally staminate; corollas yellow, reddish, or purplish, tubes shorter than ± campanulate throats. Cypselae arcuate to ± coiled (usually some beaked, some 2–3-winged, some both beaked and winged), abaxial faces usually tuberculate and/or transversely ridged. x = 11.

Distribution

Introduced; Macaronesia, Mediterranean Europe, Near East, North Africa, widely cultivated, sometimes escaping and/or persisting

Discussion

Species 15 or fewer (2 in the flora).

Key

1 Phyllaries 13–21+, 6–10+ mm; ray florets 13–18+, corolla laminae 5–8(–12+) mm Calendula arvensis
1 Phyllaries 12–40+, (8–)10–12+ mm; ray florets 30–50(–100+), corolla laminae 12–20+ mm. Calendula officinalis

"broader" is not a number.

... more about "Calendula"
scarious +
ovate +  and deltate +
penicillate +
indeterminate +  and determinate +
John L. Strother +
Linnaeus +
decurrent +
compound +  and simple +
oblong;oblanceolate spatulate or linear +
tuberculate +
discernible +
Pot marigold +
zygomorphic +, actinomorphic +  and (3-)5-merous +
purplish +, reddish +, yellow +  and orange +
flattened +, compressed +, obcompressed +, less columnar +  and prismatic +
fertile +  and bisexual +
Macaronesia +, Mediterranean Europe +, Near East +, North Africa +, widely cultivated +  and sometimes escaping and/or persisting +
Latin calends, first day of the month, and -ula, tendency +  and perhaps meaning “through the months” and alluding to ± year-round flowering +
stipitate-glandular +  and arachnose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
heterogamous +
each +  and sessile +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
campanulate;hemispheric +
linear +  and oblanceolate +
petiolate +  and sessile +
opposite +  and alternate +
deltate +
dentate +  and entire +
denticulate +  and entire +
2-carpellate +
13 +  and 40 +
Sp. Pl. +  and Gen. Pl. ed. +
1753 +  and 1754 +
bearing subulate enations +, hairy +  and bristly +
heyn1974a +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Calendula +
Asteraceae tribe Calenduleae +
campanulate +
50 cm500 mm <br />0.5 m <br /> (70 cm700 mm <br />0.7 m <br />) +
perennial +  and annual +
5 cm50 mm <br />0.05 m <br /> (50 cm500 mm <br />0.5 m <br />) +
tree +  and shrub +