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Published In: Memoirs of The New York Botanical Garden 78: 114. 1996. (17 Dec 1996) (Mem. New York Bot. Gard.) Name publication detail
 

Project Name Data (Last Modified On 5/8/2022)
Acceptance : Accepted
Project Data     (Last Modified On 3/1/2022)
Contributor Text: Anjum Perveen & M. Qaiser
Contributor Institution: Centre for Plant Conservation, University of Karachi – PAKISTAN
Synonym Text:

Silphium trilobatum L., Syst. Nat. ed. 10, 2: 1233. 1759; Wedelia trilobata (L.) Hitchcock, Rep. (Ann.) Mo.Bot. Gard. 4: 99. 1893; Chowdhery in Hajra et al., Fl. Ind. 12: 426. 1995; Sphagneticola ulei O. Hoffmann, Notizbl. Koeingl. Bot. Gart. Berlin 3: 36. 1900; Stemmodontia trilobata (L.) Small, Fl. S.E. U.S. 1262. 1903; Thelechitonia trilobata (L.) H. Robinson & Cuatrecasas in Phytologia 72: 142. 1992.

Flower/Fruit:

Fl. Per.:. Throughout the year                                           Vern.: Bahamas 

Type:

Type: Habitat in America. Sp. Pl., ed. 2.2 1303 (1763). RCN:6652 Lectotype designated by Howard, Fl. Lesser Antilles 6: 616, 1989. 

Distribution:

Native to the New World tropics but now widespread in the Old World tropics.

Comment/Acknowledgements:

Cultivated as an ornamental ground cover in many countries including Pakistan, sometimes grows an escape from cultivation and occasionally naturalized on slopes and along roadsides at lower elevations. Recently reported as an invasive species from Rawalpindi and Islamabad (without any specific locality), Pakistan, by Saraj Bahadur et al. (Microsc. Res. Tech. 2019, 1 – 9. https://doi.org/10.1002/jemt.23420) probably established as an escape from cultivation.  

Map Location:

G–4 Karachi: Near Botany Department, behind Biological Research Center, University of Karachi,  Taba Rauf 12 (KUH).  


 

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Prostrate, mat forming perennial herbs with flower bearing parts ± ascending. Stem stout, reddish green, rounded, rooting at the nodes, coarsely strigose to hirsute, sometimes subglabrous or glabrous. Leaves simple, opposite, somewhat succulent or fleshy, petiole winged, 2–4 mm long, or sessile, lamina obovate or lanceolate, 2.5–7.5 cm long, 2–4 cm wide, often 3–lobed, lobes irregularly toothed or serrate, cuneate, acute. Capitula radiate, solitary, on 6–8 cm long peduncles. Phyllaries 2–3 – seriate, outer green, oblaceolate 10–12 mm long, 2–3 mm wide, inner 6–8 mm long, ca 3 mm wide, innermost narrower membranous, whitish, ca 5 mm long, ca 2 mm wide. Receptacle paleate, palea conduplicate, pale yellow, 4–6 mm long, obovate, irregular toothed at apex, ± enfolding the florets. Ray florets female, yellow, showy, 8–12, ligule (8–) 10–12 mm long, 3 – lobed. Disc florets numerous, yellow, tubular, corollas 6-8 mm long. Cypselas blackish, tuberculate, surface uneven, ray cypselas 3 – angled, ca. 5 mm long, disc cypselas 2 – angled. Pappus crown of short fimbriate, fused scales on a stout rostrum.

 
 
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