58 
BULLETIN 794, U. S. DEPARTMENT OF AGRICULTURE. 
MARSH LAKES, CHERRY COUNTY. 
September 7, 1915. 
Description, — These lakes in reality form one large lake, the parts of which 
are distinguished only in name. Fresh water, well filled with vegetation, small 
proportion open ; average greatest depth as follows : South Marsh Lake, 7 to 
8 feet ; Middle Marsh Lake, 10 to 12 feet ; and North Marsh Lake, 6 to 7 feet. 
Bottom in general mucky, in a few places sandy. No inlet or outlet. 
DlSTKIBUTION OF VEGETATION. 
Very little open water on South Marsh Lake. Large body of open water, sur- 
rounded by dense growth of vegetation in Middle Marsh Lake. 
SHOEE PLANTS. 
In addition to grasses, sedges, etc., listed 
1. Three-way sedge (Dulichium arundi- 
naceum) * 
2. Water pepper {Polygonum puncta- 9. 
turn).* Mature fruit. 
3. Three-finger (Potentillamonspeliensis).* 10. 
4. Water hemlock (Cicuta bulbifera).* 
5. Thorowort (Eupatorium perfoliatum). 
Flowers. 11. 
6. Purple boneset (Eupatorium purpu 
reum)* 
7. Sunflower (Helianthus awnuus).* 
Flowers. 
for other lakes, there are: 
Sticky aster (Hachaeranthera sessili- 
flora).* Flowers. 
Bur marigold (Bidens laevis).* 
Flowers. 
New England aster (Aster novae- 
angliae).* Flowers to immature 
fruit. 
Rush lettuce (Lygodesmia juncea).* 
Flowers. 
SEMISUBMEKGED PLANTS. 
Dominants: 
12. Reed (Phragmites communis). 
13. Big bulrush (Scirpus occidentalis) . 
Secondary species: 
14. Cat-tail (Typha latifolia). Common. 
15. Bur reed (Sparganium eurycarpum). 
Sparse. 
16. Wapato (Sagittaria latifolia). * Abun- 
dant. 
17. Wild rice (Zizania palustris). Abun- 
dant. 
18. Spike rush (Eleocharis acuminata). 
Abundant. 
19. Bristly sedge (Carex comosa). Abun- 
dant. 
20. Rush (Juncus marginatus). A field 
and other scattered patches. 
21. Water smartweed (Polygonum amphi- 
bium ) . 
SUBMERGED PLANTS. 
Dominants: 
22. Water moss (Drepanocladus sp.). 
23. Sago pondweed (Potamogeton pectina- 
tus). 
24. Curly pondweed (Potamogeton per- 
foliatus richardsonii) . 
25. Water milfoil (Myriophyllum spica- 
tum) * Immature fruit. 
Secondary species: 
26. Musk grass (Chara sp.) Common. 
27. Bur reed (Sparganium eurycarpum). 
Abundant. 
28. Floating pondweed (Potamogeton na- 
tans) . Common. 
29. Illinois pondweed (Potamogeton illi- 
noensis). 
30. Small pondweed (Potamogeton pusil- 
lU8). Abundant. 
31. Eelgrass pondweed (Potamogeton com- 
pressus). Common. 
32. Variable pondweed (Potamogeton heter- 
ophyllus). 
33. Bushy pondweed (Xajas flexilis). Com- 
mon. 
34. Sp'ike rush (Eleocharis acicularis). 
Abundant. 
35. Water smartweed (Polygonum amphi- 
bium ) . Common. 
36. White water crowfoot (Batrachium di- 
varicatum} . 
37. Coontail (Ceratophyllum demersum). 
Abundant. 
38. Spatterdock (Nymphaea advena). Com- 
mon. 
39. Bladderwort (Utricularia vulgaris). 
Common. 
