INDEX. 



A. 



ACHNANTHBS Bory 



exilis ? Kiitz. 



minutissima Kiitz. 

 Agardhia Gray 

 ANABAINA Bory 



constricta Hass. 



jftos-aquee Bory 



impalpebralis ? Bory 



licheniformis ? Bory 



? spiralis Thomp. - 

 ANACYSTIS Menegh. 



furfuracea Menegh. 

 Anhaltia SchwaM 

 AFIIANIZOMENON Morren 



incurvum Morren 

 APLONEMA Hass. 

 Apona Adans - 

 ARTHRODESMUS Ehr. - 



acutus Ehr. 



convergent Ehr. 



Incus Hass. 



octocornis Ehr. 



quadricaudatus Ehr. 

 ARTHRONEMA Hass. 



cirrhosum Hass. - 

 AUJ>ACOCYSTIS Hass. - 



pellucida Hass. 



B. 



BACILLARIA Ehr. 

 communis Bory 



