EMERSED AQUATIC WEEDS 57 



Cattails ( Typha spp.) 58 



Bulrush {Scirpuss^^.) 60 



MARGINAL WEEDS 63 



Reed canarygrass ( Phalaris arudinacea ) 64 



Johnsongrass {Sorghum halepense) 66 



Smartweed (/b^^o/7f//77spp.) 68 



Common reed [Phragmites communis) 70 



WOODY PLANTS (PHREATOPHYTES) 73 



Tamarisk or saltcedar ( Tamarix pentandra.) 74 

 Willow, Cottonwood, Russian-olive {Sal/x spp., 



Populus spp., Elaeagnus augustifolia) 76 



INVERTEBRATE AQUATIC ANIMALS 79 



Freshwater sponge 80 



Pipe moss [Bryozoa) 82 

 Freshwater clam (Asiatic clam) ( Corbicula 



fluminea) 84 



Black fly (5//77f///z//77 spp.) 86 



BIBLIOGRAPHY 89 



VI 



