190 Lake Maxinkuckee, Physical and Biological Survey 



Leaves of a patch growing in a ditch near Farrar's were orna- 

 mented with white blotches while some of those growing at the edge 

 of the lake had the leaves ornamented with dark purple spots. 



49. PICKEREL-WEED 



PONTEDERIA CORDATA Linnaeus 



Quite common in shallow water along muddy shores. Loca- 

 tions are as follows : Near Long Point ; a large patch in the cut-off 

 swamp between Farrar's and Overmyer's ; by the Ice-houses, north 

 of Winfield's; and off Culver Military Academy grounds. South 

 of the marsh near Overmyer's, extending beyond Norris Inlet is a 

 nearly continuous patch, the patch being largest in the vicinity of 

 the green boathouse. Abundant also along Lost Lake outlet. 



Pontederia is fond of growing in muddy bottom, from the bank 

 to where the water is about 10 inches to a foot deep. The leaves 

 succumb early to frosts in autumn, but the part below water and 

 young leaves remain green. Cattle do not seem to dislike it, as the 

 plants by the springy flat near Overmyer's field were neatly 

 cropped off. 



There is a peculiar attractiveness about this plant with its thick 

 dark green leaves, and spikes of blue flowers with a central spot of 

 yellow, growing in tropical luxuriance at the water's edge. It 

 frequently makes a rather narrow zone between the stretch of 

 Scirpus americanus, growing in water to the depth of 1.5 to 2 feet. 



50. GREEN ARROW-ARUM 



PELTANDRA VIRGINICA (Linnaeus) 



Not very abundant but scattered about in various wet places. 

 It was most abundant at the Outlet, both at the head and along the 

 margins. Plants were occasionally seen along the south shore of 

 the lake, and were pretty abundant near Norris Inlet. They were 

 also found in marshes west of the lake. In late autumn the fruits 

 are abundantly scattered along the shore of the Outlet and of Lost 

 Lake. The seeds, enclosed in a large dark-green spathe and sur- 

 rounded by a clear jelly-like aril, are said to be a favorite food of 

 wild geese along the Kankakee, where it is abundant. 



51. BRISTLY SEDGE 



CAREX COMOSA Boott 



This very handsome and well-marked sedge grows in tufts in 

 the water at the south end of Lost Lake and along by Norris Inlet. 



