68 



BULLETIN 194, V. S. DEPARTMENT OF AGRICULTURE. 



SEMISUBMEEGED PLANTS. 



Dominant: 



1. Tule (Scirpus validus). 

 Secondary species: 



2. Cat-tail (Typha latifoHa). Sparse. 



3. Bur reed (Spargantum eurycarpum). 



Sparse. 



4. Water plantain (Alisma suhcorda-tiim) . 



Common. 



5. Wapato (Sagittaria latifoHa). Common. 



6. Cord - grass (Spartina michauxiana) . 



Abundant. 



7. River bulrush (Scirpus fluviatilis) . 



Sparse. 



8. Three-square (Scirpus americanus). 



Sparse. 



9. Water smartweed (Polygonum amphi- 



tium) . Common. 

 10. Water hemlock (Cicuta maculata), and 

 others listed under shore vegetation 

 for neighboring lakes growing in shal- 

 low water. 



SUBMERGED PLANTS. 



Dominants: 



11. Sago pondweed (Potamogeton pecti- 



natus) . 



12. Water milfoil (Myriophyllum spica- 



tum). 

 Secondary species: 



13. Variable pondweed {Potamogeton heter- 



ophyllns). 



14. Small pondweed (Potamogeton pusil- 



lus). Common. 



15. Spike rush (Eleocharis aalcularis). 



Common. 



16. Water smartweed (Polygonum aniphi- 



Mum). Sparse. 



17. Bladderwort (Utricularia vulgaris). 



Sparse. 



FLOATING PLANTS. 



18. Butterflywort (Riccia natans). [ 20. Star duckweed (Lemna trisulca). Com- 



19. Big duckweed (Sptrodela polyrMza) . mon. 



Common. | 



Wild-duck foods. — Plants in the above list which have considerable value as 

 food for wild ducks are : Nos. 1, 5, 7, 11, 13, 14, 19, and 20 ; those of less im- 

 portance are : Nos. 3, 4, 6, 8, 9 (16), 12, and 15; the remainder are of no known 

 value. 



SILVER LAKE, CHERRY COUNTY, 



October 17, 1915. 



Description. — Marsh and most of the other vegetation at west end of lake ; 

 water clearer at west end of marsh than in the open where there is an alkaline 

 appearance ; bottom sandy at east half ; mucky in west ; average greatest depth 

 3 to 4 feet. Outlet to the west ; since the lake is being drained, probably some 

 current; no inlet. 



Distribution of Vegetation. 



SHORE PLANTS. 



As for neighboring lakes. 



SEMISUBMEEGED PLANTS. 



Dominant: 



1. Tule (Scirpus validus).* Mature fruit, 



only thing growing in open water. 

 Secondary species: 



2. Cat-tail (Typha latifoUa). 



3. Bur reed (Sparganium eurycarpum). 



4. Water plantain (Alisma suhcordatum) . 



5. Wapato (Sagittaria latifolia). 



6. Cord - grass (Spartina michauxiana). 



Common. 



7. Reed (Phragmites communis). Com- 



mon. 



8. Three - square (Scirpus americanus). 



Common. 



9. Willow (Salix). 



10. Curly dock (Riimex crispus). Sparse. 



11. Water smartweed (Polygonum amphi- 



Mum). 



12. Water hemlock (Cicuta maculata). 



Sparse. 



