Lake Maxinkuckee, Physical and Biological Survey 177 



out from the ice elevator at a depth of 4 or 5 feet. In general form 

 it resembles P. natans or P. aniericanus from which it can be distin- 

 guished by its shining leaves. What was thought to be this species 

 was seen in flower by Norris Inlet June 24, 1901, although its usual 

 time of flowering is in September and October. It remains green 

 all winter, even the floating leaves not decaying in autumn but be- 

 coming embedded in the ice during the winter. 



24. VARIOUS-LEAVED PONDWEED 



POTAMOGETON HETEROPHYLLUS Scherber 



Although this species apparently strays out into deep water at 

 times it is in the main a shallow water plant found rather close to 

 shore and confined chiefly within the five-foot line. One of the 

 largest and best known patches is out a little way in front of the 

 Scovell cottage on Long Point. There are occasional patches or 

 single plants scattered along the shore of Long Point, and it was 

 found rather frequently in the northern part of the lake. It keeps 

 its form all winter, the leaves turning purplish-brown. 



25. COMMON FLOATING PONDWEED 



POTAMOGETON NATANS Linnaeus 



This, one of the most common and widely distributed of the 

 pondweeds, does not cover large areas in Lake Maxinkuckee, but is 

 frequently found in small scattered patches in shallow water near 

 shore, frequently associated with other pondweeds, especially the 

 fennel-leaved pondweed, P. 'pecUnatus. It was not noted in water 

 over 6 or 8 feet deep. Among the localities at which it was noted 

 are : A few plants near McSheehy's pier, a good patch near Mur- 

 ray's, a patch south of the old ice elevator, some in lagoons in Long 

 Point flat (an area now all filled in), a small patch by Darnell's, a 

 dense thick patch near Overmyer's low woodland, and at the delta 

 at the mouth of Spangler Creek. 



It is common in the shallow water and black muddy bottom at 

 the upper end of Lost Lake. Here, however, no floating leaves 

 were produced. Some grew in the thoroughfare between the 

 lakes. 



P. natans grows either in sandy or mucky bottom and retains 

 its form and green color after the ice has covered the lake, and 

 probably some plants remain green the whole winter through. It 

 produces a new growth early in the spring. By May 30 slender 

 phyllodia had been developed on some of the plants for several 

 days and the broad floating leaves were beginning to show well. 

 It was noted in flower July 24. 



12— 17618— Vol. 2 



