108 



AGRICULTURAL COLLEGE. 



[No. 17. 



Swamp Beggar- 

 Ticks. 



Bur-Marigold. 



Fetid Marigold. 

 Sneeze-Weed. 



May- Weed. 

 Garden Chamomile. 



Milfoil. 



Ox-Eye Daisy, 

 White-Weed. 



Wild Wormwood. 



Mugwort, or Sage 

 Brush. 



Bidens connata, L. 



Ames. 



var. coinosa. 



Ames. 



Bidens cluysanthemoides, Miclix. 



Ames ; Grinnell. 

 These species of Bidens are often allowed to grow in corn- 

 fields, along ditches, and in fence rows, by slovenly farmers. 



Dysodia chrysanthemoides, Lag. 



Ames ; Grinnell. 



Helenium autumnale, L. 



Ames ; Grinnell. 



Leptopoda brachypoda, Torr. & Gr. 



Indianola. 



Manita cotula, DC. 



Ames ; Charles City ; Burlington— common along roadsides. 



Anthemis nob His, L. 



Roadsides at Ames. 



Achillea Millefolium, L. 



Ames ; Indianola : Charles City ; Burlington. 



Leucanthemum vulgar e^ Lam. 



Ames. 

 Lately introduced, and perhaps not yet established. A mis- 

 erable weed. 



Artemisia dracunculoides, Pursli. 



Ames. 



Artemisia Ludoviciana, ETutt. 



Ames ; Grinnell. 



Biennial Wormwood Artemisia biennis, Willd. 



Ames. 



Artemisia Absinthium, L. 



Charles City. Escaped from gardens. 



Antennaria plantaginifolia, Hook. 



Ames ; Indianola ; Charles City. 



Ereclitliites hieracifolia, Raf. 



Ames ; Grinnell. 



Cacalia tuberosa, Nutt. 



Ames ; Grinnell ; Charles City. 



Common 

 Wormwood. 



Everlasting. 



Fire-Weed. 



Indian Plantain. 



