13 3 5A BOULDER RIVER AT NATURAL BRIDGE 



1335A TOTAL COUNT: 400 # OF SPECIES: 67 



1335A SWDI : 3.6418 POLLUTION INDEX: 2.70 SILTATION INDEX: 18.0 



^k35A D0002 Achnanthes affinis Grun. 



fRsA D0021 Achnanthes deflexa Reim. 



1335A D0046 Achnanthes lanceolata Breb. ex Kutz. 



1335A D0048 Achnanthes lanceolata v. dubia Grun. 



1335A D0063 Achnanthes linearis v. pusilla Grun. 



1335A D0070 Achnanthes minutissima Kutz. 



1335A D0065 Achnanthes marginulata Grun. 



1335A D0201 Amphipleura pellucida (Kutz.) Kutz. 



1335A D0310 Amphora ovalis v. pediculus (Kutz.) V.H. ex 



1335A D0312 Amphora perpusilla (Grun.) Grun. 



1335A D0804 Caloneis bacillum (Grun.) CI. 



1335A D1107 Cocconeis placentula v. euglypta (Ehr.) CI. 



1335A D1108 Cocconeis placentula v. lineata (Ehr.) V. H 



1335A D1601 Cymbella affinis Kutz. 



1335A D1638 Cymbella minuta Hilse ex Rabh. 



1335A D1641 Cymbella minuta v. silesiaca (Bleisch ex Rabh 



1335A D1657 Cymbella sinuata Greg. 



1335/- D2004 Diatoma hiemale v. mesodon (Ehr.) Grun. 



1335A D2008 Diatoma vulgare Bory 



1335A D2500 Epithemia adnata (Kutz.) Breb. 



1335A D2710 Fragilaria construens (Ehr.) Grun. 



1335A D2718 Fragilaria intermedia Grun. in V.H. 



1335A D2720 Fragilaria leptostauron (Ehr.) Hust . 



1335A D2726 Fragilaria pinnata Ehr. 



1335A D2730 Fragilaria vaucheriae (Kutz.) Peters. 



«5A D2954 Gomphoneis eriense v. variabilis Kociolek et 

 5A D3 56 Gomphonema angustatum (Kutz.) Rabh. 

 5A D3 067 Gomphonema clevei Fricke 

 1335A D3072 Gomphonema dichotomum Kutz. 

 1335A D3108 Gomphonema subclavatum (Grun.) Grun. 

 1335A D3300 Hannaea arcus (Ehr.) Patr. / 



1335A D3814 Navicula arvensis Hust. 

 1335A D3850 Navicula cryptocephala Kutz. 

 1335A D3892 Navicula graciloides A. Mayer 

 1335A D3918 Navicula laevissima Kutz. 

 1335A D3928 Navicula menisculus Schumann 

 1335A D3930 Navicula minima Grun. 



1335A D3957 Navicula pelliculosa (Breb. ex Kutz.) Hilse 

 1335A D398G Navicula pupula v. rectangularis (Greg.) Grun, 

 1335A D4003 Navicula secreta v. apiculata Patr. 

 1335A D4008 Navicula seminulum Grun. 

 1335A D4211 Neidium dubium f. constrictum Hust. 

 1335A A0018 Nitzschia admissa Hust. 

 1335A D4326 Nitzschia dissipata (Kutz.) Grun. 

 1335A A0020 Nitzschia dissipata v. media (Hantz.) Grun. 

 1335A D4334 Nitzschia fonticola Grun. in Cl . et Moll. 

 1335A D4335 Nitzschia frustulum (Kutz.) Grun. 

 1335A D4336 Nitzschia frustulum v. perminuta Grun. 

 1335A D4338 Nitzschia frustulum v. subsalina Hust. 

 1335A D4352 Nitzschia kutzingiana Hilse 

 1335A A0023 Nitzschia linearis v. tenuis (W.Sm.) Grun. 

 ^^5A D4368 Nitzschia paleacea (Grun.) Grun. 

 '^5A D4411 Nitzschia pura Hustedt 

 1335A D4380 Nitzschia romana Grun. 

 1335A D4391 Nitzschia subtilis Grun. 

 1335A D4610 Pinnularia biceps Greg. 

 1335A D5100 Rhoicosphenia curvata (Kutz.) Grun. 



