82 Phytologia (Aug 2004) 86(2) 



WEDELIA AGGREGATA (Greenm.) B. L. Turner, Phytologia 65: 



348. 1988. 



Aspilia aggregata Greenm. 



Known only by the type, Jal, between Bolanos and Guadalajara; 

 Sep. 



Superficially resembling W. rosea but the heads rayless, sessile and 

 the involucres narrowly campanulate with graduate purple bracts. 



Turner (1988), not having examined the type, treated this taxon as 

 encompassing W. rosea. Thanks to Strother's study of the group (1991) 

 in which the two taxa are treated as distinct species, Turner (1992a,b) 

 reevaluated the group and agreed with Strother's assessment. 



WEDELIA AYERSCOTTIANA B. L. Turner, Phytologia 60: 125. 



1986. 



Wedelia acapulcensis var. ayerscottiana (B. L. Turner) Strother 



Nue, Tarn, San, mostly Gulf slopes, pine-oak forests, 400-2000 m; 

 Jun-Oct. 



Stiffly erect, simple-stemmed, suffruticose herbs to 1 m high; much 

 resembling W. scabra but the fruits of both ray and disk florets similar, 

 maculate, wingless and the leaves often rather lacerate and sparsely 

 pubescent beneath. 



This species has the leaf-vestiture of W. scabra but otherwise looks 

 like W. hispida; the involucres are quite narrow with striate bracts, 

 resembling those of Aldama dentata. It usually occurs in low cloud 

 forests with the cycad genus Dioon along the eastern flanks of the Sierra 

 Madre Oriental. 



WEDELIA CHIHUAHUANA B. L. Turner, Phytologia 65: 348. 1988. 



w Chi canyons in pine-oak forests, 1 700-2 1 00 m; Jun-Sep. 



Trailing or weakly ascending perennial herbs to 60 cm high; leaves 

 mostly 2-8 cm long, 1-5 cm wide; petioles 1-4 mm long; blades ovate, 

 3-nervate, moderately to sparsely pubescent beneath with straight 

 hispid hairs, the margins serrate to somewhat irregularly lacerate; heads 

 campanulate, radiate, 1-2 cm across the extended rays, the ultimate 



