Wedelia

Jacquin

Enum. Syst. Pl., 8, 28. 1760.

Etymology: For George Wolfgang Wedel, 1645–1721, botanist/professor at Jena
Treatment appears in FNA Volume 21. Treatment on page 125. Mentioned on page 65, 66.
 TaxonIllustrator 
FNA21 P19 Melanthera nivea.jpegMelanthera nivea
Wedelia acapulcensis var. hispida
Sphagneticola trilobata
Yevonn Wilson-Ramsey
Yevonn Wilson-Ramsey
Bee F. Gunn

Subshrubs or shrubs [annuals, perennials], 10–50 (–100) [–250] cm. Stems mostly erect, branched from bases and/or throughout. Leaves cauline; opposite; petiolate or sessile; blades (3-nerved [pinnately nerved]) trullate to lanceolate or lance-linear [deltate, elliptic, filiform, linear, ovate], sometimes ± 3-lobed, bases cuneate to truncate, margins coarsely toothed to subentire, faces hispid [scabrous to scabrellous or strigose to strigillose, ± sericeous, often with finer, uncinate hairs as well], usually glanddotted. Heads radiate (discoid), borne singly [in corymbiform arrays]. Involucres obconic to hemispheric, 4–8 [–15] mm diam. Phyllaries persistent, 8–16+ in 2–3+ series (outer usually larger and/or more herbaceous than inner). Receptacles convex, paleate (paleae conduplicate, chartaceous to scarious). Ray-florets 0 or 4–18, pistillate, fertile [neuter]; corollas yellow to orange [purplish or white]. Disc-florets 8–150+, bisexual, fertile; corollas yellow to orange [purplish], sometimes marked with purple, tubes shorter than or equaling funnelform or cylindric throats, lobes 5, deltate. Cypselae ± dimorphic; peripheral sometimes obcompressed and weakly 3-angled, inner compressed and biconvex or flattened [somewhat 4-angled] (some or all winged, all ± rostrate, bearing central neck or boss apically, some or all each bearing wartlike elaiosome at base); pappi persistent, cyathiform (fimbriate cups plus 0–3 coarse bristles or awns borne together on rostra). x = 13?

Distribution

Tropical and subtropical New World

Discussion

Species 25+ (1 in the flora).

African aspilias may belong within Wedelia.

Wedelia glauca is treated herein as Pascalia glauca, W. trilobata as Sphagneticola trilobata. A report of Stemmodontia asperrima (Sprengel) C. Mohr from ballast may be source of reports of W. calycina Richard or W. frutescens Jacquin from Alabama. I have seen no specimens to support those reports.

Selected References

None.

"broader" is not a number.

... more about "Wedelia"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
John L. Strother +
Jacquin +
bristlelike +
coroniform +
cuneate +  and truncate +
compound +  and simple +
3-lobed;trullate;lanceolate or lance-linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
yellow +  and orange +
inner +  and peripheral +
hairy +  and glabrous +
flattened +, biconvex +, compressed +, 3-angled +  and obcompressed +
fertile +  and bisexual +
fertile +  and bisexual +
Tropical and subtropical New World +
For George Wolfgang Wedel, 1645–1721, botanist/professor at Jena +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
obconic;hemispheric +
sessile +  and petiolate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
coarsely toothed +  and subentire +
2-carpellate +
persistent +
cyathiform +
8 +  and 16 +
unequal +  and subequal +
Enum. Syst. Pl., +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Wedelia +
Asteraceae (tribe Heliantheae) subtribe Ecliptinae +
cylindric +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
perennial +  and annual +
shrub +  and subshrub +