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HELENIUM AUTUMNALE. 



AMERICAN SNEEZE-WORT. SNEEZE-WEED. 



Syngenesia superflua, Linn. Corymbiferae, Juss. 



GENERIC CHARACTER. 



Calix simple, many-parted. Bays of the flower semi-trifid. Receptacle naked, globose ; the 

 rays only paleaceous. Seed villous. Pappus paleaceous, about 5-leaved, leaflets 

 awned. 



SPECIFIC CHARACTER. 



Leaves lanceolate, serrate, sub-decurrent ; stem corymbose above ; disk florets 5-cleft ; 

 rays flat, reflexed. Willd. and Pursh. 



Whole plant, particularly stem, branches, and peduncles, cover- 

 ed with a very dense,short, almost imperceptible pubescence, which 

 gives the whitish-green appearance to it. Stem from five to seven 

 feet high, many growing from the same root. Root perennial, 

 fibrous. Stem erect, angular, somewhat winged from the decurrent 

 margins of the leaves, much branched above ; branches also angu- 

 lar. Leaves opake, lanceolate, dotted with innumerable fine pits, 



