Lake Maxinkuckee, Physical and Biological Survey 321 

 380. CHARLOCK; WILD MUSTARD 



SINAPIS ARVENSIS L. 



Not common; a member of the introduced railroad flora. 



381. RAPE 



BRASSICA NAPUS L. 



Occasionally cultivated and sometimes escapes. Some plants 

 grew along the railroad north of the icehouses and had well de- 

 veloped pods by June 11, 1901. 



FAMILY 65. SARRACENIACE^E. PITCHER-PLANT FAMILY 

 382. PITCHER-PLANT 



SARRACENIA PURPUREA L. 



This interesting plant was once quite common in the neighbor- 

 hood of the lake. They were once quite abundant in the large 

 tamarack a few miles west of the lake, but with the draining of this 

 marsh they rapidly disappeared. A few fine plants were seen at 

 the edge of Lake Maxinkuckee, but they were not seen on the later 

 visits to the lake, and have probably died out. They still are rather 

 common in Hawk's marsh, and appear to be thriving there. The 

 leaves vary somewhat in color, some being nearly uniformly green, 

 others with deep purple veins. They usually contain the remains 

 of large insects, such as beetles, grasshoppers and the like. A 

 small, long-legged mosquito-like insect seems to live, and probably 

 to breed, in them. It has no trouble rising straight out of the cups. 

 In many cases insects gnaw their way through, though whether 

 from the inside or outside has not been determined; many of the 

 pitchers are empty, with large holes gnawed through the base. 



The liquid within the pitchers freezes perfectly solid during the 

 winter but this never breaks or splits the pitcher, perhaps on ac- 

 count of their elasticity. The purple blossoms, which appear in 

 late May and early June, are large and handsome; the large um- 

 brella-shaped expansion of the style gives them an odd, bald appear- 

 ance. 



FAMILY 66. DROSERACE^E. SUNDEW FAMILY 

 383. ROUND-LEAVED SUNDEW 



DROSERA ROTUNDIFOLIA L. 



Not common ; found in a few small patches along the northeast 

 and east shore of Lost Lake ; a small patch found also a consider- 



21 17618 Vol. 2 



