234 



SEAWEEDS 



divide and branch repeatedly, and so produce a 

 body of cells enclosing the carpogonial branch. 

 By division and growth of the cells that envelop 

 this procarpium there is formed the wall . of the 

 more or less globular fruit, perforated at the apex 



FIG. 76. Cliftoncea pectinata 

 natural size. 



FIG. 77. a, Diagram of procarp in 

 EhodomelefK (b is the axial cell, a is the 

 cell from which the carpogonial branch 

 eeec arises, and d is a branch cell which 

 gives rise to sterile filaments); b, car- 

 pogonial branch of Polysiphonia (after 

 Schmitz) ; c, Dasya elegans reduced. 



and enclosing the gonimoblast. The gonimoblast 

 is commonly a much suppressed tuft of cells on the 

 upper, arched surface of which the carpospores are 

 borne. These are generally ovate or club-shaped, 



