1909] Oraenicher, Wisconsin Flowers and Their Pollination. 49 



ALLOTROPOUS. 



Wasps : 172 ; 173— both s. 



Parasitic wasp : 247, s. 



Flies: 369; 372; 373; 374; 377; 378; 379; 383; 384; 385; 398; 

 403; 413; 417; 442; 444 — all s. or f. p. 



Beetle : 527, s. 



Buff : 554, s. 



Eutrop 10 = 12-4% 



Hemitrop 50 = 61.7% 



Allotrop 21 = 25.9% 



7. Aster puniceus L. Red-stalk Aster. 



Flowers of this aster have been found from August 3 to No- 

 vember 5. The diameter of the heads with their light blue rays 

 runs from about 30 to 35 mm. Shull 20 found an average of 36 

 ray florets and 69 disk florets. The upper, distended part of the 

 discal floret has a cylindrical shape, and is 3 mm. long, and i l /i 

 mm. wide with erect lobes. No crossing of the stylar branches 

 occurs in these flowers. 



Following is the list of 77 vistors : 



EUTROPOUS. 



Bees : 1, worker, s. ; 2, female, worker, s. and c. p. ; 4, worker, s. 

 and c. p.; 6. -vorker, s. and c. p.; 7, male, s. ; 11, worker, s. ; 13, female 

 and worker, s. ; 17, female, s. and c. p.; 24, female, s. and c. p.; 28, 

 female, s. ; 34, male and female, s. and c. p.; 35, female, s. and c. p. 



HEMITROPOUS. 



Bees: 89, female, s. and e. p.; 95, female, s. and c. p.; 97, female, 

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

 105, female, s. and e. p.; 107, male, s. ; 113, female, s. and c. p.; 119, 

 female, s. and c. p.; 133, female, s. 



Wasps: 147; 149; 186; 202— all s. 



Flies: 272; 275; 276; 283; 293; 304; 308; 312; 313; 314; 315; 

 316 ; 318 ; 319 ; 321 ; 322 ; 330 ; 332 ; 338— all s. or f. p. 



Butterflies and moths: 449; 450; 451; 457; 460; 463; 464; 469; 

 477 ; 478 ; 485 ; 492 ; 493— all s. 



ALLOTROPOUS. 



Wasps : 137 ; 172 ; 180— all s. 



Flies: 372; 373; 374; 376; 377; 384; 385; 402; 404; 408; 411; 

 438 ; 439 ; 442 ; 443 ; 445 — all s. or f . p. 



Eutrop 12 = 15.6% 



Hemitrop 46 == 59.7% 



Allotrop 19 = 24.7% 



26) Shull, loc. cit. 



