572 MINNESOTA BOTANICAL STUDIES. 



Helianthus maximiliaiii Schrad. Ind. Sem. Hort. Goett. 

 1835. 

 Waste places. N. P. Junction. September. No. 924. 



Helianthus occiden talis Riddell. Suppl. PI. Ohio. 13. 1836. 

 Sandy copses. Centerville. July. No. 699. 



Helianthus petiolaris Nutt. Jour. Acad. Phil. 2:115. 1821. 

 Sandy soil. Minneapolis. July. No. 586. 



Helianthus rigidus Desf. Cat. Hort. Par. 3: 184. 1813. 

 Copses. Morrison county. August. Nos. 871, 885. 



Helianthus strumosus L. Sp. PI. 905. 1753. 

 Copses. Sandy lake. August. No. 791. 



Helianthus tracheliifolius Mill. Gard Diet. ed. 8. No. 7. 

 1768. 

 A hybrid. Copses. Minnehaha falls. September. No. 942. 



Coreopsis palniata Nutt. Gen. 2 : 180. 1818. 

 Dry prairies. Cannon Falls. July. 



Bidens trichosperma (Michx.) Britt. Bull. Torr. Bot. Club. 

 20:281. 1893. 

 Wet places. Minneapolis. September. No. 936. 



Bidens beckii Torr. Spreng. Neue. Entd. 2 : 135. 1821. 

 Ponds. Minnetonka. July. No. 634. 



Bidens cernua L. Sp. PL 832. 1753. 



Wet places. Minneapolis. September. No. 985. 



Bidens laevis (L.) B. S. P. Prel. Cat. N. Y. 29. 1888. 

 River banks. Aitkin county. August. No. 842. 



Bidens conuata Muhl. Willd. Sp. PL 3: 1718. 1804. 

 Wet places. Silver creek. August. No. 919. 



Bidens eonnata Muhl. var. pinnata Watson. Gray, Man. Bot. 

 ed. 6. 284. 1890. 

 Wet places. Ramsey county. September. No. 929. 



Bidens froudosa L. Sp. PL 832. 1753. 

 A small form. Wet places. Sandy lake. August. No. 769. 



Madia glomerata Hook. Fl. Bor. Am. 2: 24. 1841. 

 N. P. Junction. September. No. 926. 



Heleniuni autumnale L. Sp. PL 886. 1753. 

 River banks. Aitkin county. August. No. 850. 



Achillea millefolium L. Sp. PL 899. 1753. 

 Waste places. Vermilion. July. No. 491. 



