170 Lake Maxinkuckee, Physical and Biological Survey 



This pondweed bears some general resemblance to P. compres- 

 sus from which it can be distinguished by the presence of 2 glands 

 at the base of each leaf. Some of the propagation buds were col- 

 lected along shore March 27, 1901. Some was found up Aubee- 

 naubee Creek on a seining trip September 3, 1900. It does not 

 grow in patches but is scattered among other plants. 



11. SMALL PONDWEED 



POTAMOGETON PUSILLUS Linnjcus 



A small insignificant species, growing scattered among other 

 plants ; more common in the southeastern portion of the lake, in 

 deep water ranging from 10 to 24 feet. It also probably grows 

 occasionally in shallow water. Like all the deep-water Potamoge- 

 tons it relies largely upon propagating buds for its dissemination. 



12. FILIFORM PONDWEED 



POTAMOGETON FILIFORMIS Pcisoon 



Very abundant in 10 to 13 feet of water, ranging from 2 to 24 

 feet. It is occasional along shore in shallow water. It was noted 

 in flower at Norris Inlet June 24, 1901 and observed in flower 

 some time earlier in the northern part of the lake. It does not 

 form dense patches but grows rather scattered. 



13. ROBBINS' PONDWEED 



POTAMOGETON ROBBINSII Oakes 



Rather common and widely distributed in Lake Maxinkuckee 

 in depths ranging from 3 to 24 feet, and common in water from 

 10 to 18 feet deep. Rather common in Lost Lake and in the shallow 

 waters of Outlet Bay, forming especially fine patches in front of 

 the Ice-houses. It was dredged at the Weedpatch, and in fact can 

 be raked up almost anywhere. It prefers rather muddy bottom, 

 and lies almost prostrate on the ground, never rising to the surface, 

 even in shallow water, to form flower or fruit. It is one of the 

 most handsome species of the genus and the large plume-like 

 branches lying on the bottom, do more than almost any other spe- 

 cies to add charm to the Chara carpet over shallow bottoms. The 

 white or yellowish color of the plumes, due to a coating of lime over 

 the old leaves, makes them all the more conspicuous against the 

 dark bottom through the clear water. 



P. robbinsii retains its form throughout the winter. The lower 

 leaves assume a brown and somewhat deadish appearance, but the 

 tips are firm and of a lively purplish-green. 



