NEBRASKA WILD-DUCK FOODS. 
45 
SEMISUBMERGED PLANTS. 
Dominants: 
5. Wapato (Sagittaria latifolia). 
6. Spike rush (Eleocharis acuminata). 
Secondary species: 
7. Reed (Phragmites communis). 
8. Wild rice (Zizania palustris). Rare. 
9. Big bulrush. (Soirpus occi'dentalis) . 
SUBMERGED PLANTS. 
Dominants: 
10. Sago pondweed (Potamogeton pectina- 
tus). 
11. Water milfoil (Myriophyllum spica- 
tum). 
Secondary species: 
12. Eelgrass pondweed (Potamogeton com- 
pressus). 
13. Floating pondweed (Potamogeton no- 
tans'). 
14. Curly pondweed (Potamogeton perfoli- 
atus richardsonii) . 
15. Small pondweed (Potamogeton pusil- 
lus). 
Wild-duck foods. — Plants in the above list which have considerable value as 
food for wild ducks are: Nos. 2, 5, 8, 9, 10, and 15; those of lesser importance 
are : Nos. 1, 3, 11, 12, 13, and 14 ; the remainder are of no known value. 
WEST CHAIN LAKE, BROWN COUNTY. 
August 16, 1915. 
Description. — Little or no marsh area. Well filled with vegetation. Bottom 
mucky ; depth 4 feet. No inlet ; outlet during high water into Middle Chain 
Lake. 
Distribution of Vegetation. 
shore plants. 
About as for neighboring lakes. 
1. Switchgrass (Panicum virgatum). 
2. Wild rye (Elymus canadensis). 
3. Indian grass (Sorgastrum nutans).* 
Flowers. 
4. Redtop (Agrostis alba). 
SEMISUBMERGED PLANTS. 
Dominants: 
5. Cat-tail (Typha latifolia).* Mature 
fruit. 
6. Crested wapato (Sagittaria cristata). 
7. Big bulrush (Scirpus occidentalis) . 
Secondary species: 
8. Wild rice (Zizania palustris). Very 
scattered stand on east end. 
9. Spike rush (Eleocharis acuminata). 
10. Water smartweed (Polygonum amphi- 
Mum).* Flowers. 
SUBMERGED PLANTS. 
Dominants: 
11. Waterweed (Philotria canadensis). 
12. Water milfoil (Myriophyllum spica- 
tum). 
Secondary species: 
13. Sago pondweed (Potamogeton pecti- 
natus).* Mature fruit. 
14. Variable pondweed (Potamogeton hete- 
rophyllus).* Flowers. 
15. Floating pondweed (Potamogeton na- 
tans) . 
16. Curly pondweed (Potamogeton perfoli- 
atus richardsonii). 
17. Long-leaved pondweed (Potamogeton 
americanus) .* 
18. Bushy pondweed (Najas flexilis). 
19. Coontail (Ceratophyllum demersum).* 
Wild-duck foods. — Plants in the above list which have considerable value as 
food for wild ducks are : Nos. 7, 8, 13, 14, 18, and 19 ; those of less importance 
are : Nos. 1, 6, 10, 11, 12, 15, 16, and 17 ; the remainder are of no known value. 
