992 REPORT OF STATE GEOLOGIST. 



B. frondosa L. Common Beggar-ticks. 



In moist soil, and a very annoying weed, in waste fields and in 

 fence corners of cultivated fields. Wherever it obtains a foothold 

 it multiplies rapidly, often occupying almost exclusively large 

 areas. 



Flowers from July through September. 



Jefferson (J. M. Coulter); Monroe and Vigo (Blatchley); 

 Fayette (Hessler); Clark (Baird and Taylor); Jay, Delaware, Ran- 

 dolph, and Wayne (Phinney); Daviess (Clements); Franklin 

 (Meyncke); Gibson and Posey (Schneck); Noble (Van Gorder): 

 Tippecanoe (Cunningham); Kosciusko (Coulter); Knox (Spill- 

 man); Hamilton and Marion (Wilson); Steuben (Bradner). 



B. bipinnata L. Spanish Needles. 



Abundant in almost every situation. Often a troublesome weed 

 in cultivated fields. With us it reaches its fullest development 

 in size and numbers in moist soil. 



Flowering from July through September. 



Jefferson (Barnes); Monroe and Vigo (Blatchley); Fayette 

 (Hessler); Clark (Baird and Taylor); Jay, Delaware, Randolph, 

 and Wayne (Phinney); Franklin (Meyncke); Gibson and Posey 

 (Schneck); Noble (Van Gorder); Putnam (MacDougal); Tippe- 

 canoe (Cunningham); Knox (Spillman); Hamilton and Marion 

 (Wilson). 



B. trichosperma (Michx.) Britton. Tall Tickseed Simflower. 

 (Coreopsis trichosperma Michx.) 



In swamps and wet lowlands throughout the State. Nowhere 

 especially abundant. 



Flowering season, August and September. 



Tippecanoe (Cunningham); Kosciusko (Coulter); Monroe 

 (Blatchley); Jefferson (Barnes); Jay, Delaware, Randolph, and 

 Wayne (Phinney); Clark (Baird and Taylor); Franklin 

 (Meyncke); Round Lake (Deam); Lake and Porter (Hill); Hamil- 

 ton and Marion (Wilson); Steuben (Bradner). 



B. trichosperma tenuiloba (Gray) Britton. 



(Coreopsis trichosperma tenuiloba Gr.) 

 The prevailing form in the dune region of the southern shore 

 of Lake Michigan. 



Flowering season, same as preceding. 

 Lake and Porter (Hill). 



