THE FLORA or SCOTT AND MUSCATINE COUNTIES. 233 



Dysodia, Cav. 



431. D. chrysanthemoides, Lag. 



Dry sterile soil ; frequent. 

 Anthemis, L. Chamomile. 



I.32. A. Cotula, DC. Dog Fennel. Mayweed. 



Roadsides and was e grounds ; common. 

 433- A. arvensis, L. Corn Chamomile. 

 Waste ground, Muscatine ; infrequent. 

 Achillaea, L. 



434. A. Millefolium, L. Yarrow. 



Fields, etc.; common. The rose-colored form is infrequent. 

 Chrysanthemum, Tourn. 



435. C. Leucanthemum, L. Ox-eye Daisy. 



Railroad tracks at West Davenport, Blue Crass, and Musca- 

 tine Island. 

 Tanacetum, L. 



436. T. vulgare, L. 



Roadsides near old gardens; frequent. 

 Artemisia, L. Wormwood. 

 437- A. caudata, Michx. 



Dry sandy soil, Cedar River region ; common. 

 438. A. dracunculoides, Pursh. 



Dry soil ; infrequent. 

 439- A - Abrotinum, L. 



Near old gardens ; not frequent. 



440. A. serrata, Nutt. 



Sandy banks of streams, etc.; frequent. 



441. A. Ludoviciana, Nutt. 

 Dry ground; common 



442. A. biennis, Willd. 

 Waste grounds ; common. 



443. A. annua, L. 



Streets and waste grounds of Davenport and Muscatine. 

 Senecio, Tourn. 



444. 6". aureus, L. Golden Ragwort. 

 Boggy place at Wild Cat Den ; rare. 



445. 5. aureus, L., var. Balsamitce, Torr. & Gray. 

 Dry prairies; common. 



[Proc.D.A. S., Vol. VIII.] io [July 2 6, , 9 oo.J 



