I _• 2 TIIK AMERICAN MIDLAND NATURALIST 



Helianthus annuus L. Common Sunflower. 



Fields and roadsides. Common. July 5 (4). 

 Helianthus petiolaris Nutt. Prairie Sunflower. 



Manhattan, in sandy soil. July 20. 



Helianthus scaberrimus Ell. Stiff Sunflower. 

 Hillsides. Common. July 5. 



Helianthus Maximiliani Schrad. 

 Hillsides. Frequent. Aug 30. 



Helianthus grosseserratus Martens. Saw-toothed Sunflower. 



Roadsides. Common. July 5. 

 Helianthus hirsutus Raf. Stiff-haired Sunflower. 



Dry woods of ravines. Frequent. July 20. 

 Helianthus tuberosus L. Jerusalem Artichoke. 



Fields and roadsides. Common. Aug. 20. (18). 

 \erbesina altemijolia (L.) Britton. Crownbeard. 



Along woods. Common. Aug. 5. 

 Coreopsis tinctoria Nutt. Tiekseed. 



Blue Rapids. Once collected on river bank. 

 Bidens cernua L. Nodding Bur Marigold. 



Wet places. Common at least at Manhattan. Aug. 25 

 Bidens comosa (A. Gray) Wiegand. 



Riverbanks. Common. 

 Bidens frondosa L. Black Beggar-ticks. 



Riverbanks. Common. Aug. 5. 

 Bidens vulgata Greene. Tall Beggar-ticks. 



Riverbanks and fields. Common. Aug. 5. 

 Bidens involucrata (Nutt.) Britton. 



Riverbanks. Occasional. 

 II ' ymenopappus corymbosus T. & G. 



Manhattan. Common on hillsides. May 15. 

 Boebera papposa (Vent.) Rydb. Fetid Marigold. False Dog 

 Fennel. 



Dry roadsides and waste places. Common. May 30 (June 2). 

 Achillea Millefolium L. Milfoil. Yarrow. 



Prairies. Common. May 20. (22). 

 Anthemis Cotula L. May-weed. Dog Fennel. 



Roadsides. Occasional. June 10 (10). 

 Chrysanthemum Leucanthemum L. Ox-eye Daisy. 



Manhattan,* Meadows. Occasional. May 30. 



