120 



Chlorophycece 



thickness. Two carpospores have been observed to be formed in 

 one sporocarp of Mougeotia cajmcina', this is precisely analogous 

 to the double spores met with in certain Desmids and in abnormal 

 cases of Spirogyra. 



Fig. 44. A, Mougeotia sp., from Frizinghall, W. Yorks., young filament showing 

 organ of attachment ( x 100). B, Mougeotia capucina (Bory) Ag., from the 

 New Forest, Hants., showing edge of plate-like chloroplast ( x 430). C, M. 

 viridis (Kiitz.) Wittr. ( x445). D H, M. parvula Hass.; D F, from Eppiug 

 Forest, Essex ; G and H, from near Settle, W. Yorks. ( x 445). I, M. gracil- 

 lima (Hass.) Wittr., from Esher West-end Common, Surrey ( x 445). cp, carpo- 

 spore ; sp, sporocarp; z, zygospore (of Wittrock). 



