84 Phytologia (Aug 2004) 86(2) 



lanceolate, pinnately nervate, densely strigose beneath with coarse hispid 

 hairs; heads radiate on ultimate peduncles 3-10 cm long; involucres 

 campanulate, 3-4 seriate, 10-12 mm high, the bracts subgraduate to 

 nearly equal; ray florets 5-11, the ligules yellow, 6-9 mm long; disk 

 florets 30-50; achenes clavate 4.0-4.5 mm long. 



Resembling W. rosei but the leaves markedly appressed-strigose 

 beneath and the heads larger (involucres 10-12 mm high vs 6-10 mm). 

 Strother (1991) placed W. cronquistii in synonymy under his concept 

 of W. greenmanii, a view with which Turner (1992a,b) disagreed, the 

 characters given in his key being compelling, not to mention their 

 geographic disparities. 



WEDELIA ELOTTIANA B. L. Turner, sp. nov. 



Similis Wedeliae iners (S. F. Blake) Strother sed foliis tenioribus, 

 integris vel paene integris, habentibus capitula fructifera parviora (4-6 

 mm alta vice capitulorum 7-10 mm altorum) et flores discorum steriles 

 pro parte maxima. 



Stiffly erect tap-rooted annual herbs to 50 cm high. Stems moderately 

 pilose with an array of short to long hairs 0.2-1.0 mm long. Leaves 

 alternate throughout; petioles 1-3 cm long; larger leaves with blades 

 broadly lanceolate to ovate, thin, pinnately veined, 5-7 cm long, 1.5-2.0 

 cm wide, pubescent below and above with scattered coarse hairs to 1 mm 

 long, below these a minute array of mostly uncinate hairs; margins entire 

 or nearly so. Heads borne on ultimate peduncles 3-7 cm long; involucres 

 composed of ca 8 subequal bracts in 2-3 series. Receptacles small, plane, 

 the bracts lanceolate, ca 5 mm long. Ray florets 5-6, pistillate, fertile; 

 tubes ca 1 mm long; ligules ovate, ca 5 mm long, 3.5 mm wide, weakly 

 2-nervate; achenes ovoid, markedly winged, ca 5 mm long, 4 mm wide, 

 the body of the achene enclosed within broad corky wings, the latter 

 0.6-1.0 mm wide. Disk florets yellow, 3-4 mm long; tubes 1.0- 1.5 mm 

 long; lobes 5, deltoid, ca 0.5 mm long, mostly sterile (the style branches 

 seemingly fused ventrally, but a few of the outermost florets apparently 

 producing clavate wingless fertile achenes 3-4 mm long, 0.6-1.0 mm 

 wide). 



