BROWN ALGJE 



145 



Fig. 61. — Nereocystis. (After Setchell.) 



Fig. 63.— Dictyota Dichotoma. (After 



BORNET AND THURET.) 



^W' The sorus above with, motionless eggs, 



F[G. 62.— Saccorhiza. below with antheridia. 



10 



