58 



BULLETIN 194, V. 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. 



Distribution or 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. 



SHORE PLANTS. 



In addition to grasses, sedges, etc., listed 

 (DulicMum arundi- 



puncta- 



1. Three-way 



naceum) .* 



2. Water pepper (Polygonum 



turn).* Mature fruit. 



3. Three-finger (PotentillamonspeUensis) .* 



4. Water hemlock (Cicuta iulbifera).* 



5. Thorowort (Eupatorium perfoUatuni) .* 



Flowers. 



6. Purple boneset {Eupatorium purpu- 



reum) .* 

 1. Sunflower {Helianthus annuus).* 

 Flowers. 



10. 



11. 



for other lakes, there are : 



Sticky aster (Machaeranthera sessili- 



flora).* Flowers. 

 Bur marigold (Bidens laevis).* 



Flowers. 

 New England aster {Aster novae- 



angliae).* Flowers to immature 



fruit. 

 Rush lettuce {Lygodesmia juncea).* 



Flowers. 



SEMISUBMERGED PLANTS. 



Dominants: 



12. Reed (Phragmites communis) . 



13. Big bulrush {8cirpus occidentalis). 

 Secondary species: 



14. Cat-tail {Typha latifoUa). 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 amplii- 



hium). 



SUBMERGED PLANTS. 



Dominants: 

 22. Water moss {Drepanocladus sp.). 

 2.3. Sago pondweed {Potamogeton pectina- 

 tus). 



24. Curly pondweed {Potamogeton per- 



foliatus richardsonii) . 



25. Water milfoil {Myriophyllum spicOr 



turn).* Immature fruit. 

 Secondary species: 



26. Musk grass {Chara sp.) Common. 



27. Bur reed {Sparganium eurycarpum). 



Abundant. 



28. Floating pondweed {Potamogeton nOr- 



tans). Common. 



29. Illinois pondweed {Potamogeton illi- 



noensis). 



30. Small pondweed {Potamogeton pusil- 



h(s). Abundant. 



31. Belgrass pondweed (Potamogeton com- 



pressus). Common. 



32. Variable pondweed (Potamogeton lieter- 



ophyllus). 



33. Bushy pondweed {Najas flexilis) . Com- 



mon. 



34. Spike rush {Eleocharis adcularis). 



Abundant. 



35. Water smartweed (Polygonum amphi- 



hiutn). Common. 



36. White water crowfoot {Batrachium di- 



varicatum) . 



37. Coontail (Ceratophyllum demersum). 



Abundant. 



38. Spatterdock (Nymphaea advena) . Com- 



mon. 



39. Bladderwort (Utricularia vulgaris). 



Common. 



