Argyranthemum

Webb ex Schultz-Bipontinus in P. B. Webb and S. Berthelot

in P. B. Webb and S. Berthelot, Hist. Nat. Îles Canaries 3(2,75): 245, 258. 1844.

Common names: Marguerite
Etymology: Greek argyros, silver, and anthemon, flower allusion unclear
Treatment appears in FNA Volume 19. Treatment on page 552. Mentioned on page 30, 485, 487.

Subshrubs or shrubs, 10–80+ [–150] cm. Stems usually 1, procumbent to erect, usually branched, glabrous [hairy]. Leaves mostly cauline; alternate; petiolate or sessile; blades ± obovate [oblong to lanceolate or linear] (bases sometimes ± clasping), [0] (1–) 2–3-pinnately lobed (lobes cuneate to linear), ultimate margins dentate [entire], faces glabrous [hairy]. Heads radiate [discoid], borne singly or in open, corymbiform arrays. Involucres hemispheric or broader, [6–] 10–18 [–22+] mm diam. Phyllaries persistent, 28–45+ in 3–4 series, distinct, oblanceolate or ovate to lance-deltate or lanceolate (not keeled abaxially), unequal, margins and apices (stramineous to brown) scarious (tips of inner often ± dilated). Receptacles convex to conic, epaleate. Ray-florets 12–35+, pistillate, fertile; corollas usually white, sometimes yellow or pink, laminae ± ovate to linear. Disc-florets [50–] 80–150+, bisexual, fertile; corollas yellow [red, purple], tubes ± cylindric (not basally dilated, ± gland-dotted), throats campanulate, lobes 5, deltate (without resin sacs). Cypselae dimorphic: outer (ray) 3-angled, each angle usually ± winged (wings not spine-tipped); inner (disc) compressed-prismatic (± quadrate, sometimes 2 angles winged, wings not spine-tipped); all ± ribbed or nerved, faces usually glabrous, sometimes gland-dotted between ribs (pericarps without myxogenic cells or resin sacs; embryo-sac development bisporic); pappi 0 (cypselar wall tissue sometimes produced as teeth, crowns, or oblique tubes similar in texture to cypselar wings). x = 9.

Distribution

Introduced; Atlantic Ocean Islands (Macaronesia)

Discussion

Species 24 (1 in the flora).

"broader" is not a number.

... more about "Argyranthemum"
not tailed +  and obtuse +
scarious +
corymbiform +  and open +
indeterminate +  and determinate +
John L. Strother +
Webb ex Schultz-Bipontinus in P. B. Webb and S. Berthelot +
decurrent +
compound +  and simple +
lobed;obovate +
Marguerite +
zygomorphic +, actinomorphic +  and (3-)5-merous +
yellow +, pink +  and white +
nerved +  and ribbed +
obcompressed +, compressed +, 3-angled +, columnar +  and prismatic +
fertile +  and bisexual +
fertile +  and bisexual +
Atlantic Ocean Islands (Macaronesia) +
Greek argyros, silver, and anthemon, flower +  and allusion unclear +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
in open , corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
compressed-prismatic +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
hemispheric +
less ovate +  and linear +
sessile +  and petiolate +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
28 +  and 45 +
in P. B. Webb and S. Berthelot, Hist. Nat. Îles Canaries +
bearing subulate enations +, hairy +  and bristly +
convex;conic +
humphries1976a +
exalbuminous +
appendaged +  and truncate +
papillate +
Compositae +
Argyranthemum +
Asteraceae tribe Anthemideae +
campanulate +
cylindric +
perennial +, biennial +  and annual +
shrub +  and subshrub +