Class Genus Species No. Strain No.
Trebouxiophyceae Nannochloris 
Eustigmatophyceae Nannochloropsis 
Florideophyceae Nemalionopsis  36 
Chlorophyceae Neochlorosarcina 
Chlorophyceae Neodesmus 
Sarcomonadea Neoheteromita 
Nephroselmidophyceae Nephroselmis  20 
Zygnematophyceae Netrium 
Charophyceae Nitella  12  21 
Charophyceae Nitellopsis 
Bacillariophyceae Nitzschia  17 
Cyanophyceae Nodosilinea 
Cyanophyceae Nodularia 
Chlorarachniophyceae Norrisiella 
Cyanophyceae Nostoc  18 

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