The Scottish Naturalist. 



cylindrocystis, Menegh. 



1. Brebissonii, Menegh. 



Correnie ; Tough. 



2. Diplospora, Lundell. 



Correnie ; Curling Pond, Haughton. 



desmidium (Ag.) De Bary. 

 i. Swart zii, Grev. 



Tough ; Correnie ; Towie ; Tonley. 



DIDYMOPRIUM, Ralfs. 



1. Borreri, Ralfs. 



Correnie. 



2. Grevillei, Ralfs. 



Towie. 



docidium, Breb. 



1. Baculum, Breb. 



Towie. 



2. Ehrenbergii, Ralfs. 



Little Don ; Towie ; Tonley. 



3. Rectum, Delp. 



Tonley ; Tough. 



4. Tiwicatum, Breb. 



Towie ; Ditch at Meikle Moss, Alford. 



euastrum (Ehr.) Ralfs. 



1. Affine, Ralfs. 



Correnie. 



2. Ansatum, Ralfs. 



Correnie ; Towie ; Tonley. 



3. Binale (Turp.) Ralfs. 



Correnie ; Tough ; Tonley. 



4. Crassum (Breb.) Lund. 



Correnie ; Towie. 



5. Declive, Reinsch, 



Correnie ; Tonley. 



6. Denticulatum, Gay. 



Correnie ; Tough ; Tonley. 



7. Didelta, Ralfs. 



Correnie ; Tonley. 



8. JElegans, Breb. 



Little Don ; Whiteley Marsh j Tonley. 



