NEBRASKA WILD-DUCK FOODS. 
75 
TRAINOR LAKES, GARDEN COUNTY. 
September 30, 1915. 
Description. — North Trainor Lake, small; South Trainor Lake, about half 
open water ; the two connect by a small stream. Fresh water ; bottom mostly 
sandy ; mucky in part of marsh area ; average greatest depth, 3 to 4 feet. 
Distribution of Vegetation. 
shore plants. 
Typical meadow of grasses, sedges, rushes, mints, etc., as listed for neighbor- 
ing lakes. 
SEMISUBMERGED PLANTS. 
Dominant: 
1. Tule (Scirpus validus). 
Secondary species: 
2. Horsetail (Equisetum sp.) 
3. Cat-tail (Typha latifolia). Common. 
4. Bur reed (Sparganmm eurycarpum). 
Sparse. 
5. Water plantain (Alisma subcordatum). 
Common. 
6. Wapato (Sagittaria latifolia). Common. 
7. Cord-grass (Spartina gracilis). Common. 
8. Reed (Phragmites communis). Common. 
9. Three-square (Scirpus americanus). 
Common. 
10. Spike rush (Eleocharis acicularis) . 
11. Spike rush (Eleocharis, probably 
glaucescens ) . 
12. Sedge (Carex utriculata) .* 
13. Water smartweed (Polygonum amphi- 
bium). 
14. Water hemlock (Cicuta maculata). 
Rare. 
-. Other grasses, etc., of shore, growing 
in shallow water. 
SUBMERGED PLANTS. 
Dominants : 
15. Sago pondweed (Potamogeton pecti- 
natus). 
16. Bladderwort (Utricularia vulgaris).* 
With winter buds. 
Secondary species: 
17. Musk grass (Chara sp.).* Common. 
18. Small pondweed (Potamogeton pusil- 
lus).* Winter buds; common. 
19. Widgeon grass (Ruppia occidentalis) .* 
Common. 
20. Spike rush (Eleocharis acicularis).* 
Common. 
21. Spike rush (Eleocharis, probably 
glaucescens) . 
22. Water smartweed (Polygonum am- 
phibium). Common. 
23. Small duckweed 
Common. 
24.. Star duckweed (Lemna 
Common. 
FLOATING PLANTS 
(Lemna minor), 
trisulca) . 
25. Water-meal (Wolffia punctata). 
mon. 
Com- 
Wild-duck foods. — Plants in the above list which have considerable value as 
food for wild ducks are : Nos. 1, 6, 15, 17, 18, 19, 23, and 24 ; those of less im- 
portance are: Nos. 4, 5, 7, 9, 10 (20), 11 (21), 12, 13 (22), and 25; the remainder 
are of no known value. 
PETERSON LAKE NO. 1, GARDEN COUNTY. 
October 2, 1915. 
Description.— ^.Bottom mucky; average greatest depth, 2 feet. No inlet or 
outlet. 
Distribution of Vegetation. 
SHORE PLANTS. 
Grasses, etc., as listed for neighboring lakes. 
