SIPHONOCLADIALES 



75 



Fig, 51. Cladophora. A, plant with sporangia. B, shoot of Aegagropila holsatica 

 bearing rhizoids. C, stolon of Ae. holsatica. D, rhizoids of Spongo?norpha 

 vernalis developing storage cells at the apices. (A, after Oltmanns; B, C, after 

 Acton; D, after Fritsch.) 



