IMPOUNDIITG WATER TO CONTROL BREEDING OF MOSQUITOES. 



Table 3. 



-Vegetation and depth of icater in Bayou Walnut, Mound, La., before 

 impounding, July-August, 1915 — Continued. 



star 



Vegetation. 



Depth f water 



tion. 



Species. 



Common name. 



Location. 



in channel. 







Duckweed 



Floating on water 







Cephalanthus occiden- 

 talis. 



Buttonbush 







Swamp willow 



Margin, overhanging 



Bed, in water. 







Zizaniopsismiliacea 



Asclepias perennis 



Phytolacca americana. . . 



Brvmnichiacirrhosa 



Persicariaopelousana. . . 

 Ampelopsis arbroea .... 



Bignonia radicans 



Lemna spp 



Aquatic grass 





1 



Milkweed 



Margin 



3 inches to 1 foot 3 





Pokeberry . . 



.. . do 



inches. 





Buck^vheat vine 



Smart weed... 



Margin, overhanging 



Margin.. 







Peppervine 



do 







Trumpet-creeper 



Duckweed 



Margin, overhanging 



Floating on water 



In water 







Jussiaea diffusa 



Primrose-willow 







Cephalanthus occiden- 



talis. 

 Salix nigra 



Buttonbush 



Bed and margin 







Swamp willow 



Margin, overhanging 



Bed, in water 





2 



Zizaniopsis miliacea 



Asclepias perennis 



Phytolacca americana. . . 



Brnnnichia cirrhosa 



Persicaria opelousana . . . 



Bignonia radicans 



Lenma spp 









Milkweed 



Margin . . 







Pokeberry 



do 







Buclavheat vine 



Smartweed 



Margin, overhanging 



Mai'gin 







Trumpet-creeper 



Duckweed . . 



Margin, overhanging 



Floating on water 















Cephalanthus oceiden- 



talis. 

 SaUx nigra 



Buttonbush 



Bed and margin 





3 



Swamp willow 



Margin, overhanging .... 

 Bed, in water 







Zizaniopsis miliacea 



Panicum colonum 



Persicaria opelousana . . . 



Asclepias perennis 



Lemna spp 



Aquatic grass 







Ditch grass 



Margin 







Smartweed . 



do . . 







Milkweed 



do 







Duckweed 



Floating on water 



In water.... 







Jussiaea diffusa 



Primrose- wiUow 







Cephalanthus occiden- 

 talis. 



Buttonbush 











Margin, overhanging 



Bed, in water 







Zizaniopsis miliacea 



[Lemna spp 



Aquatic grass 







Duckweed 



Floating on water 









Primrase- willow 



Buttonbush.. 







Cephalanthus occiden- 



talis. 

 Salix nigra 



Bed and margin. . . 







Swamp willow . . 



Margin, overhanging 



Bed, in water 



2 inches to 6 inches 





Zizaniopsis miliacaea 



Aquatic grass 







Duckweed 



Floating on water 







Cephalanthus occiden- 



talis. 

 SaUx nigra . . 







6 



Swamp willow 



Margin, overhanging 



6 inches. 





Zizaniopsis miliacea 











Floating on water 



Margin, overhanging 





7 



SaUx nigra 



Swamp willow 



[2 inches to 8 inches 





Zizaniopsis miliacea 



Lemna spp 





(one-third dry). 







Floating on water 







Cephalanthus occiden- 

 talis. 







8 





Stumps at margin 



Bed and margin... 



1 4 inches(two-thirds 

 f dry). 





Zizaniopsis miliacea 



fcLemnaspp 









Duckweed 



Floating on water 







Cephalanthus occiden- 

 \ taUs. 







9 



Swamp willow 



Stumps along margin . . . 

 Bed and margin 



Z inches. 





Zizaniopsis miliac«a 



Aquatic grass 









Floating on water 







Cephalanthus occiden- 

 talis. 







10.... 



Swamp wiUow 



Stumps along margin . . . 



•6 inches. 





Zizaniopsis miliacea 









Swamp willow 



Margin. . 



\2 inches (one-third 

 / dry). 

 Dry (except hoof- 



11.... 



\Zizaniopsis miliacea 







12 



Swamp willow 



Trees in bed, stumps 

 along margin. 



do 



13 





do 



prints and mud 



cracks). 



Do. 







do 



do 



\Dry, except small 

 / pool near bridge. 

 Dry, except one 



14.... 



\Zizaniopsis miliacea 







15 



Swamp willow 



Stumps along margin. . . 









small pool. 



