PLATE X. 



PIG. PAGE 



1. Bonnemaisonia asparagoides 118 



1 a, branch with spore- conceptacles, magnified. 



2. Wrangelia multifida 161 



2 a, part of a branch, magnified. 



2 b, tetraspores, magnified, 



3. CallophyUis laciniata 181 



3 a, spore-conceptacleSj magnified. 



