Rickett—The Larger Aquatic Plants of Green Lake. 407 
Table 6. Average weights of species, stated in grams per square meter. 
(From tables 3, 4, and 5.) 
Species 
Zone 1 
Zone 2 
Zone 3 
Wet 
Dry 
Wet 
Dry 
Wet 
Dry 
Chara . 
202 
33.8 
832 
129.3 
518 
78.0 
Ceratophyllum . 
28 
2.0 
114 
8.1 
429 
29.7 
Drepanocladus . 
35 
6.1 
15 
3.0 
Elodea .. 
20 
1.8 
113 
8.2 
Myriophyllum ..... 
8 
0.8 
184 
17.9 
239 
23.5 
Naias . 
4 
0.4 
22 
2.1 
11 
1.1 
Potamogeton amplifolius . 
15 
1.8 
41 
4.6 
14 
1.6 
Potamogeton foliosits . 
4 
0.4 
12 
1.4 
21 
2.2 
Potamogeton heterophyllus . 
62 
7.8 
35 
3.9 
2 
0.2 
Potamogeton natans . 
18 
2.2 
26 
3.1 
1 
0.1 
Potamogeton peciinatus . 
52 
6.8 
158 
18.3 
171 
20.5 
Potamogeton Richardsonii . 
10 
1.2 
41 
5.0 
1 
0.1 
Potamogeton zosterifolius.. . 
13 
1.6 
48 
5.8 
69 
7.9 
Ranunculus . 
13 
1.4 
11 
1.2 
5 
0.5 
Vallisneria . 
52 
3.9 
125 
8.4 
Heteranthera . 
29 
2.7 
27 
2.6 
3 
0.3 
Total. 
510 
66.8 
1,731 
219.6 
1,612 
176.8 
