Lake Maxinkuckee, Physical and Biological Survey 219 



their diet. In 1906 seeds of Naias were found in the stomach of 

 a painted turtle, and in 1907 it was again observed that the coots 

 fed to a considerable extent on this plant. 



FAMILY 12. SCHEUCHZERIACE^E. ARROW-GRASS FAMILY 



45. SEASIDE ARROW-GRASS 



TRIGLOCHIN MARITIMA L. 



Not rare in the grassy plains near the tamarack bog west of 

 the lake. The plants were observed in flower May 22, 1901. 



46. MARSH ARROW-GRASS 



SCHEUCHZERIA PALUSTRIS L. 



Rare and local. Found in flower in Hawk's marsh, May 20, 

 1901. 



FAMILY 13. ALISMACE^E. WATER-PLANTAIN FAMILY 



47. AMERICAN WATER-PLANTAIN 



ALISMA SUBCORDATUM Raf. 



Not especially abundant. Most of the plants found were in a 

 roadside ditch east of the lake, and some was also found on Long 

 Point flat, between the road and Outlet Bay. 



The airy pyramidal panicle of this species has an attractive ap- 

 pearance after the plants have ripened, somewhat suggesting old 

 witch grass. The pecularities of structure of flower, fruit and 

 seed has suggested a probable relationship to the crowfoots. 



48. BROAD-LEAVED ARROW-HEAD 



SAGITTARIA LATIFOLIA Willd. 



The broad-leaved arrowhead was rather common along the 

 shore of the lake. Occasionally it grew in sandy places, as at 

 Long Point, and here the plants were rather small, with narrow 

 leaves. It preferred to grow in deep rich mud, and here the plants 

 were robust, with large broad leaves. Among the places noted 

 where it grew was the Outlet, the Inlet, the shore of Outlet Bay, 

 and the stretch of shore north of the icehouses. Plants were com- 

 mon in the marshy tract near Culver, and here, August 18, 1906, 

 were seen magnificent large flowers, the paper-white glistening 

 thin perianth, and the contrasty green globules of the pistillate, 

 and waxy yellow center of the staminate, blossoms showing to fine 

 advantage. The plants were observed with seeds about ripe Sep- 

 tember 28, 1900, near Winfield's. 



