Rickett—The Larger Aquatic Plants of Lake Mendota. 527 
Table 13 
Cladophora, Type G 
Sample 
Weight 
Area 
Station 
Wet 
Dry 
86 ... 
Weights per sq. m.... 
Total area .... 
Total weight ... 
300 
35 
81, 
2,866 
34.8 
4.0 
900 
1 327 
8.50 
8 
Areas are recorded in square meters, weights in grams, except total weights which are 
in kilograms. 
Table 14 
Estimated Total Weights of all Species (From tables 7, 10, 11, 12, 13) 
Species 
Weight 
Wet 
Dry 
Potamogeton zosterifolius . 
290,000 
50,000 
P. pectinatus .... 
1,700,000 
200,000 
P. amplifolius ... 
4,200,000 
650,000 
P. Richardsonii . 
1,600,000 
200,000 
P. lucens .. 
150,000 
15,000 
Heteranthera dubia ... 
200,000 
20,000 
Najas flexilis . 
400,000 
40,000 
Vallisneria spiralis ... 
7,500,000 
750,000 
Ceratophullum demersum .. 
600,000 
50,000 
Myriophyllum verticillatum ... 
700,000 
90,000 
Scirpus lacustris ... 
100,000 
20,000 
Ranunculus aquatilis . 
500,000 
30,000 
80,000 
10,000 
500,000 
100,000 
60,000 
7,000 
Total... 
18,500,000 
2 , 100,000 
Weights are recorded in kilograms. 
