64 



BULLETIN 794, U. S. DEPARTMENT OF AGRICULTURE. 



57. Big duckweed 



Common. 



58. Small duckweed (Lemna minor) 



men. 



{Spirodela polyrhiza).* 

 Com 



FLOATING PLANTS 

 59 



star duckweed 

 Abundant. 



(Lemna triaulca).* 



Wild-duck foods. — Plants in the above list which ha\e considerable value as 

 food for wild ducks are : Nos. 26, 31, 32, 35, 43, 44, 48, 50, 51, 57. 58, and 59 ; 

 those of less importance are: Nos. 1, 2, 3, 4 (33), 7 (39, 53), 12, 13, 24, 29, 30, 

 34, 36, 37, 42, 46, 49, 54, and 55 ; the remainder are of no known value. 



NORTH CODY LAKE, CHERRY COUNTY. 



September 20, 1915. 



Description. — Average greatest depth 4 feet ; bottom generally mucky. Con- 

 nected with South Cody Lake during high water. 



Distribution of Vegetation. 



shoee plants. 



-. Typical wet-meadow plants. 



1. Cord-grass (Spartina michauxiana) . 



2. Wild millet (Echinochloa crus-galli). 



3. Switchgrass (Panicunv virgatum). 



4. Squirrel-tail (Hordeum jubatum). 



5. Satin grass (Muhlenhergia foUosa). 



6. Sedge (Cyperus speciosus). 



7. Rush (Junous torreyi). 



8. Rush (Juncus l)alticus). 



9. Richweed (Pilea pumila). 



10. Water smartweed (Polygonum amphi- 



iium). 



11. Water pepper (Polygonum punctatum). 



12. Lamb's-quarters (Chenopodmm album). 



13. Water hemlock (Cicuta bulMfera). 



14. Water hoarhound (Lycopus asper). 



15. Marsh mint (Stachys palustria). 



16. Hairy germander (Teucrium occiden- 



tale). 



17. Small cleavers (Galium trifldum). 



18. Ragweed (Ambrosia elatior). 



19. Goldenrod (Solidago altissima). 



20. Bur marigold (Bidens laevis). 



21. Sunflower (Helianthus annuus). 



22. Willow aster (Aster salicifoUus) . 



SEMISUBMERGED PLANTS. 



Domina/nts: 



23. Reed (Phragmites communis). 



24. Tule (Scirpus validus). 

 Secondary species: 



25. Cat-tail (Typha latifoUa). 



26. Bur reed (Sparganium eurycwrpum). 



Common. 



27. Water plantain (Alism,a subcordatum) .* 



Common. 



28. Wapato (Sagittaria latifoUa). 



29. Wild rice (Zizania paZustris). Abun- 



dant. 



30. Cord - grass (Spartina michauxiana). 



Abundant. 



■31. Three-square (Scirpus americanus). 

 Common. 



32. River bulrush (Scirpus fluviatilis). 



Common. 



33. Spike rush (Eleocharia, probably aci- 



cularis) , 



34. Bristly sedge (Carex comosa). Abun- 



dant. 



35. Cnrly dock (Rumex crispua) . Common. 



36. Water smartweed (Polygonum amphi- 



bium). 



37. Water hemlock (Cicuta maculata) . 



38. Swamp milkweed (Asclepias incar- 



nata) . 



SUBMERGED PLANTS. 



Dominant: 



39. Coontail (Ceratophyllum demersum). 

 Secondary species: 



40. Musk grass (Chara sp.).* Common. 



41. Water moss (Drepanocladus sp.). 



42. Curly pondweed (Potamogeton per- 

 foliatus richardsonii) . Common. 



Variable pondweed (Potamogeton heter- 



ophyllus).* 

 Sago pondweed (Potamogeton pectina- 



tus). Abundant. 

 Eelgrass pondweed (Potamogeton com- 



pressus) , 



43 



44 



45 



46. Bushy pondweed (Najas flexilia). 



Common. 



47. Spike rush (Eleocharis, probably aci- 



cularis). 



48. Water smartweed (Polygonum amphi- 



bium) . Common. 



49. Yellow water-crowfoot (Ranunculus 



delphinifolius) .* 



50. Water milfoil (Myriophyllum spica- 



tum). Abundant. 



51. Bladderwort (Utricularia vulgaris).* 



