CARPOPSTTA. 



153 



316. The Bexual organs consist of oarpogones and anther- 

 ids. The latter are situated singly or in groups on the 

 ends of branches (A and JS, a, a, Fig. 11). The anthero- 

 zoids are small round bodies which are destitute of cilia 



Fig. 77.— Sexual reproduction of Red Seaweeds A (Lejolisia): a, antherid; 

 ic, antherozoids; 6, carpogoiie, with antherozoids attaclied to the trichogyne; s, 

 section of ripe spore-fruit, from whicn i spore (fruit-spore) is escaping. B 

 (Nemalion); a, antherid, and antherozoids; o, carpogone. D and E^ develop- 

 ment of spore-fruit. Magnified ISO times. 



(A, X, Fig. 11), and are carried about by currents of water, 

 and in this way brought to the carpogones. 



317. The carpogones are somewhat variable as to their 

 complexity, being much more simple in the lower orders 

 than in the higher. In some cases (Nemalion) the carpo- 

 gone (-B, h, Fig. 77) is thickened below, and elongated 

 above into the trichogyne, which differs from that in Co- 

 leochsete in not being open at the top. 



318. When the antherozoids are set free from the anther- 



