Fig. 77 Halopteris. A, apical portion of H. funicularis ( x i8o); B, 



fertile plant of H. hordacea ( x i)^ C, oogonia and antheridia of H. 



hordacea ( x 126). (C, after Moore, A, B, after Lindauer.) 



REFERENCES 



Fritschj F. E. (1945). Structure and Reproduction of the Algae, Vol. II, 



pp. 260-97. Camb. Univ. Press. 

 Moore, L. B. (1951). Ann. Bot. N.S. 15 (58), 265. 



TiLOPTERIDALES 



The members of this order comprise deep-water algae of 



Atlantic shores, the life cycles of which are somewhat incompletely 



140 



