L909] Graenicher, Wisconsin Flowers auvl Their Pollination. 73 



EUTROPOUS. 



Bees : 1, worker, s. ; 2, worker, s. and e. p. ; 7, worker, s. and c. p. ; 

 9, worker, s. and c. p. 



HEMITROPOUS. 



Bees : 87, male and female, s. and c. p. ; 104, male, s. ; 105, female, 

 s. and c. p.; 106, female, s. ; 112, male and female, s. ; 113, female, 

 s. and c. p.; 115, male and female, s. and c. p.; 119, female, s. ; 120, 

 female, s. ; 121, female, s. ; 122, female, s. ; 135, female, s. 



Wasps: 142; 146; 147; 149; 150; 152; 153; 154; 201— all s. 



Flies: 306; 307; 308; 313; 316; 319; 332— all s. or f. p. 



Butterfly : 470, s. 



ALLOTBOPOUS. 



Wasps: 156: 157; 177: 180; 181— all s. 



Flies : 258 ; 262 ; 266 ; 369 ; 372 ; 373 ; 37S ; 381 ; 385 ; 438— all s. 

 or f. p. 



Beetle: 534, s. 



Bug : 554, s. 



Eutrop 4 = 8.0% 



Hemitrop 29 = 58.0% 



Allotrop 17 = 34.0% 



Senecio (Tourn.) L. 

 33. Senecio aureus L. Golden Ragwort. 



Flowering period from about May 26 to June 17. A head is 

 composed of 9 to 13 rays and 60 to 70 disk florets, and measures 

 about 25 mm. across. The golden yellow rays with a length of 9 

 mm., and a width of 2 mm. are quite showy. In the yellow discal 

 floret the bell is 2 mm. deep, and about 1 mm. wide, and it nar- 

 rows grad'aally in its lower part. The lobes are only fy mm. long, 

 and slightly spreading. There is a very distinct odor in the 

 flowers, resembling that of the Chamomile. 



The list comprises only 33 visitors, as follows : 



EUTROPOUS. 

 Bees : 17, female, s. ; 62. female, s. ; 67, male and female, s. 



HEMITROPOUS. 



Bees: 81, female, s. and c>. p.; 84. female, s. ; 90, female, s. and 

 c. p. ; 99, female, s. and c. p. ; 102. female, s. and c. p. ; 104, female, 

 s. and e. p. ; 105. female, s. and c. p. ; 106, female, s. and c. p. ; 107, 

 female, s. and e. p.: 116. female, s. and c. p.: 118, female, s. ; 122, 

 female, s. and c. p.: 124, female, s. 



Flies : 293 ; 307 ; 308 ; 315 ; 319 ; 322 ; 332 ; 341— all s. or f. p. 



Butterfly: 476, s. 



