COMPOSITE. 137 



S. ulmifolia. W. Has large, elm-like, toothed leaves, ellip- 

 tic, acuminate ; flowers in a long terminal panicle, recurved ; 

 woods on hills ; August. 



S. lanceolata. Ait. Rises to near a level top of flowers in a 

 corymb, branched, 2 feet high, with long narrow leaves, sessile, 

 and grasslike at a little distance ; fields ; August. 



8m bicolor. L. Has white flowers in the ray, and yellowish 

 in the disk ; stem hairy, 2-3 feet high, with hairy and oval 

 leaves ; racemes of flowers erect ; whitish pubescence on the 

 leaves ; fields and woods ; August to September. The flowers 

 not a bright white. 



S. ciliaris. W. The common Golden Rod of the fields. 



S. tenuifolia. Ph. Closely related to the last. 



8. speciosa. Nutt. Has larger rays and is the most beautiful. 

 The other species that have been noticed, laevigata, Ait., cwsia, W., 

 gigantea. Ait., nemoralis. Ait., arguta, W., aspera y Ait., latifolia, 

 Muhl., lividcij W., rigida, Ait., serotina, W., squarrosa, Nutt., 

 and stricta, W., have various degrees of beauty. The coesia is 

 very beautiful. 



Bidens. L. 17. 3. 



Named from the two projecting teeth of the seed ; embraces 

 about 20 species, nearly all natives of America. They are un- 

 sightly and useless weeds. 5 species are found in this State, of 

 which 3 are pretty common. 



B. frondosa. L. Common Beggar Ticks or Cuckold, or, 

 more elegantly, Burr Marygold. Grows 3-5 feet high, about 

 gardens and yards, and infests cultivated fields. As the seeds 

 have 2 barbed awns, they fasten themselves to the clothes, or 

 to the covering of animals, and are widely scattered. Only care- 

 ful cultivation will eradicate this troublesome weed ; no beauty, 

 and no obvious use ; August. 

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