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RUDBECKIA LACINIATA. 





JAGGED-LEAVED RUDBECKIA. 



Syngenesia Frustranea, Linn. Corymbiferae, Juss. 



GENERIC CHARACTER. 



Calix sub-equal, mostly consisting of a double series of leaflets. Receptacle paleaceous, 

 conic. Pappus a 4-toothed margin. 



. 



SPECIFIC CHARACTER. 



Radicle leaves pinnate; folioles ovate, unequal at base, sub-trilobed, dentate ; stem- 

 leaves three-parted and undivided, oblong, dentate; pappus crenate ; stem glabrous. 

 Willd. enum. and Schroeder. 



SYNONYMS. 



Chrisantremum Americanutn, perenne, &c. Moris. Hist. 

 Doronicum Americanum, laciniato, folio. Bauh. pin. 

 Aconitum helianthemum, canadense. Corn. Canada. 



