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AvJUAMtt VEQL^ATIOM AKD iXJCX fOOSS , 
A marsh grass that grew In all save some of the smaller lakes (#540) 
was the moat ahundant uf the water plants* In shallow water this formed 
rather a straggling growth. Where not eaten down too olosely it foztoed a 
growth two feet or two and one half feet high, and in deeper water made 
floating bogs. (This may be a species of Punioularia ). The fruiting heads 
produced many seeds that may have some ij#portanoe as duok food but this 
grass should be of more value as a cover plant if it were not eaten down to 
such an extent by grazing horses. At Be-e-lchet-hum-nez and at Blaoh Lake were 
areas grown with a round- stemmed tule ( Joirpus occidentalis ). This seemed 
« 
rather stunted and had small seed heads many of whioh seemed sterile. This 
was the only doirpus noted. It was observed that the black Thrips foiuid al- 
most universally in finiiting heads of this and ualudosus at lower levels 
was absent in the plants on those mountains. A large and a smidl species of 
Eleocharis were abundant at all of the lakes. The small species formed a car- 
pet in the beds of all of the drying lakes and grew in abundance about the 
borders of the lakes containing water. 
A broad-leaved Pondweed ( po tamo ge ten netans? ) was oonmon in the lar- 
ger lakes filling the open water and frowing in among the other aquatic 
vegetation. With it was a Mar row- leaved Pondweed (of the Potamogeton pectimatus 
type) that was fairly oomaon. These two species were most abundant in the 
three large lakes but were found also in the smaller ones. A smartweed 
(Persloaria #646) was common llicewise growing in the deeper water. This plant 
apparently would produce a oonaiderable coop of seeds* Another plant with 
a yellow flower with many Bubmerged sporooarps (f543t544«b48 ) was common in 
all of the lakes. All of these are valuable as duck foods* As is readily 
