NEBRASKA WILD-DUCK FOODS. 
63 
Distribution of Vegetation. 
SHORE PLANTS. 
Typical wet-meadow plants. 
1. Arrow-grass (Triglochin maritima)* 
Mature fruit. 
2. Wild millet (Echinochloa crus-galli) .* 
3. Switchgrass (Panicum virgatum) .* 
4. Cord-grass (Spartina michauxiana) .* 
5. Squirrel-tail (Hordeum jubatum).* 
6. Satin grass (Muhlenbergia foliosa).* 
7. Sedge - (Cyperus speciosus).* Mature 
fruit. 
8. Rush {J uncus torreyi).* 
9. Rush {J uncus balticus)* 
10. Richweed (Pilea pumila) .* Immature 
fruit. 
11. Water smartweed (Polygonum amphi- 
bium)* Flowers to mature fruit. 
12. Water pepper (Polygonum puncta- 
tum) .* 
13. Heart's-ease (Polygonum pennsylvani- 
cum).* Mature fruit. 
14. Lamb's-quarters (Chenopodium al- 
bum).* 
15. Water hemlock (Cicuta bulbifera).* 
16. Marsh mint (Stachys palustris) .* 
Flowers. 
17. Mint (Mentha canadensis).* Flowers. 
18. Water hoarhound (Lycopus asper).* 
Mature fruit. 
19. Hairy germander (Teucrium occiden- 
tals). * Mature fruit. 
20. Small cleavers (Galium trifidum).* Im- 
mature fruit. 
21. Ragweed (Ambrosia elatior).* Flow- 
ers, to mature fruit. 
22. Goldenrod (Solidago altissima) .* Flow- 
ers. 
23. Sunflower (HeUanthus annuus).* 
Flowers. 
24. Bur marigold (Bidens laevis).* Flow- 
ers. 
25. Willow aster (Aster salicifolius) .* 
Flowers. 
SEMISUBMERGED PLANTS. 
Dominants : 
26. Tule (Scirpus validus).* Mature fruit. 
27. Reed (Phragmites communis).* 
Secondary species: 
28. Cat-tail (Typha latifolia) * 
29. Bur reed (Sparganium eurycarpum) * 
Mature fruit ; common. 
30. Water plantain (Alisma subcorda> 
turn).* Common. 
31. Wapato (Sagittaria latifolia).* Ma- 
ture fruit. 
32. Wild rice (Zizania palustris).* 
33. Cord - grass (Spartina michauxiana). 
Abundant. 
34. Three-square (Scirpus americanus) .* 
Common. 
35. River bulrush (Scirpus fluviatilis) .* 
Mature fruit ; common. 
36. Spike rush (Eleocharis, probably aci- 
cularis).* 
37. Bristly sedge (Carex comosa).* Ma- 
ture fruit ; abundant. 
38. Curly dock (Rumex crispus).* Ma- 
ture fruit ; common. 
39. Water smartweed (Polygonum amphi- 
bium). 
40. Water hemlock (Cicuta maculata) .* 
Flowers, to immature fruit. 
41. Swamp milkweed (Asclepias incar- 
nata).* Mature fruit. 
SUBMERGED PLANTS. 
Dominants : 
42. Floating pondweed (Potamogeton 
natans).* 
43. Coontail (Geratophyllum demersum).* 
Secondary species: 
44. Musk grass (Chara sp.).* Common. 
45. Water moss (Drepanocladus kneiffl 
var. laxum). 
46. Curly pondweed (Potamogeton per- 
foliatus richardsonii) .* 
47. Variable pondweed (Potamogeton heter- 
ophyllus). 
48. Sago pondweed (Potamogeton pecti- 
natus) .* Abundant. 
49. Eelgrass pondweed (Potamogeton com- 
pressus).* Common. 
50. Small pondweed (Potamogeton pusil- 
lus).* Winter buds present; com- 
mon. 
51. Bushy pondweed (Najas flexilis).* 
Common. 
52. Spike rush (Eleocharis, probably acir 
cularis).* Common. 
53. Water smartweed (Polygonum amphi- 
bium). 
54. Yellow water-crowfoot (Ranunculus 
delphinifolius) . 
55. Water milfoil (Hyriophyllum spica- 
tum).* Abundant. 
56. Bladderwort (Utricularia vulgaris). 
Common. 
