184 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 26 



PLATE 39 



Fig. 1. Branchioglossum woodii (J. Ag.) Kyi. Apex of a blade, X 860 

 (after Smith). 



Fif. 2-3. Platysiphonia parva Silva & Cleary. Fig. 2. Optical periclinal section 

 of apex of a tetrasporangial blade. Fig. 3. Optical longisection of a 

 tetrasporangial blade showing origin of sporangia and cover cells 

 (After Silva & Cleary). 



Fig. 4. Platysiphonia clevelandii (Farl.) Papenf. Margin of a tetrasporangial 

 blade to same scale as adjoining P. parva to show divided flanking 

 cells (after Silva & Cleary). 



Fig. 5. Grinnellia lanceolata Daws. Part of a tetrasporangial plant, X 3. 



Fig. 6. Polycoryne gardneri Setch. A young thallus and pairs of mature 

 cystocarpic, spermatangial and tetrasporic branches, X 11 (after 

 Wagner) . 



