42 BULLETIN 794, U. S. DEPARTMENT OF AGRICULTUKE. 



FLOATING PLANTS. 



26. Star duckweed (Lemna trisiilca). I 27. Big duckweed (Spirodela polyrhisa). 



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

 food for ducks are • Nos. 14, 16, 21, 24, 26, and 27 ; those of lesser impor- 

 tance are : Nos. 1, 2, 6, 8, 9, 17, 19, 20, 22, 23, and 25 ; the remainder are of no 

 known value. 



ENDERS LAKE OVERFLOW, BROWN COUNTY. 



August 11, 1915. 



Description. — Very little marsh. Semisubmerged vegetation abundant. 

 Water fresh ; small amount open ; depth 6 to 7 feet. No outlet ; inlet from 

 Enders Lake. 



Distribution of Vegetation, 

 shore plants. 



Wide zone of wet meadow. 



1. Cord-grass (Spartina michanipiana). 



Common. 



2. Switchgrsiss {Panicum virgatum). Com- 



mon. 



3. Hair-grass (Agrostis hyemaUs). 



4. Redtop (Agrostis alba). 



5. Bog reedgrass (Calatnagrostis inex- 



pansa).* 



6. Sliining sedge (Cyperus rivula7-is). 



Common. 



7. Straw sedge (Cyperus strigosus). Abun- 



dant. 



8. Sedge (Carex vulpinoidea). 



9. Rush (Juncus nodosus). Abundant. 



10. Rush (Juncus canadensis) . Common. 



11. Water hemlock (Cicuta maculata). 



12. Marsh mint (Stachys palustris) . 



SEMISUBMERGED PLANTS. 



Dominants: 



13. Spike rush (Eleocharis acuminata).* 



Flowers. 



14. Water smartweed (Polygonum amphi- 



Muni).* Flowers. 



Secondary species: 



15. Bur reed (Sparganium eurycarpum). 



Immature fruit. 



16. Wapato (Sagittaria latifolia). 



17. Reed (Phragmites communis) .* 



18. Big bulrush (Scirpus occidentalis) . 



SUBMERGED PLANTS. 



Dominants: 



19. Curly pondweed (Potamogeton perfoli- 



atus richardsonii) . 



20. Floating pondweed (Potamogeton na- 



tans) . 



Secondary species: 



21. Water moss (Drepanocladus aduncus 



aquaticus) . 



22. Sago pondweed (Potamogeton pectl- 



natus). 



23. Eelgrass pondweed (Potamogeton com- 



24. Small pondweed (Potamogeton piisil- 



lus ) . 



25. Variable pondweed (Potamogeton hete- 



rophyllus).* 



26. Water milfoil (Myriophyllum spica- 



tum). 



FLOATING PLANTS. 



27. Star duckweed (Lemna trisulca). 



28. Big duckweed (Spirodela polyrhiza). 



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

 food for wild ducks are: Nos. 16, 18, 22, 24, 25, 27, and 28; those of lesser 

 importance are : Nos. 1, 2, 6, 7, 8, 14, 15, 19, 20, 23, and 20 ; the remainder are of 

 no known value. 



