108 



AGRICULTURAL COLLEGE. 



[No. 1' 



Swamp Beggar- 

 Ticks. 



Bidens connata, L. 



Ames. 



var. comosa. 



Ames. 



Bidens chrysanthemoides, 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. 



Maruta cotula y DC. 



Ames ; Charles City ; Burlington— common along roadsides. 



Garden Chamomile. Anthemis nobllis, L. 

 Roadsides at Ames. 



Achillea Millefolium, L. 



Ames ; Indianola : Charles City ; Burlington. 



Bur -Marigold. 



Fetid Marigold 

 Sneeze-Weed. 



May-Weed. 



Milfoil. 



Ox-Eye Daisy, 

 White-Weed. 



Leucanthemum vulgare, Lam. 



Ames. 



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

 erable weed. 



Wild Wormwood. Artemisia dracunculoides, Pursh. 



Ames. 



Mugwort, or Sage Artemisia Ludoviciana, Eutt. 



Brush. Ames ; Grinnell. 



Biennial Wormwood Artemisia biennis, "Willd. 



Ames. 



Common Artemisia Absinthium, L. 



Wormwood. Charles City. Escaped from gardens. 



Antennaria plantaginifolia, Hook. 



Ames ; Indianola ; Charles City. 



Everlasting 

 Fire-Weed. 



Indian Plantain. 



Erechthites hieracilblia, Raf. 



Ames ; Grinnell. 



Cacalia tuberosa, Nutt. 



Ames ; Grinnell ; Charles City. 



