146 PLANT LIFE OF ALABAMA. 



AMPHIPRORA Ehrenb. 

 Amphiprora costata O'Meara. 1 



PLAGIOTROFIS Pfitz. 



Plagiotropis vitrea (Wm. Smith?) Grunow. Amphiprora vitrea Win. Smitli. 

 Plagiotropis elegans (Wm. Smith) Grunow. Amphiprora elegans Wm. Smith. 



CYMBELLA Agh. 

 Cymbella heteropleura (Ehrenb.) Kuetz. 



AMPHORA Ehrenb. 



Amphora proteus Gregory. 

 Brackish or salt water. 

 New Jersey. 



Amphora clevei A. Schmidt. 

 Amphora cingulata Cleve. 



NITZSCHIA Hassal. 



Nitzschia scalaris (Ehrenb. ?) Wm. Smith. 

 Fresh or brackish water. 

 New Jersey. 



Nitzschia sigmoidea (Nitzsch) Wm. Smith. 

 Fresh water. 

 New Jersey. 



Nitzschia circumsuta (Bailey) Grunow. 



Subfamily SURIRELLOIDEAE. 



SURIRAYA Turp. 

 Suriraya febigerii Lewis. 

 Brackish water. 

 Tampa Bay. New Jersey. 



Suriraya fastuosa Ehrenb. 

 Marine. 

 New Jersey. 



CYSTOPLEURA Bre"bis. 



Cystopleura zebra (Ehrenb.) Kuntze. Epithemia zebra Knot/. 

 CAMPYLODISCUS Ehrenb. 



Campylodiscus clypeus Ehrenb. 

 Campylodiscus limbatus Br<^bis. 



Class CHLOROPHYCEAE. Green Algae. 



Order PROTOCOCCALES. 



Family HYDRODICTYACEAE. 



HYDRODICTYON Koth. 



Hydrodictyon reticulatum (L.) Lagerh. 

 Stagnant pools, ditches. Over the State. 

 United States, Canada, Europe. 



1 There is some uncertainty about this name. Ed. 



