50 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



EXPLANATION OF PLATE IIL 



Nitophylhcm fryeanuin. 



Fig. 6. Cystocarpic plant, sliowing disposition of cystocarps and segments 



of frond. One-third natural size. 

 Fig. 7. Tetrasporic plant, showing palmate frond with much prolonged 



segments, arrangement of sori and delicate veins. One-third 



natural size. 

 Fig. 8. Tetrasporic plant, showing venation and attenuate segments of 



frond. One-third natural size. 

 Fig. 9. Cystocarpic plant, showing pinnately arranged segments of frond. 



One-third natural size. 



Nitophyllum corallinaruni. 



Fig. 10. Tetrasporic plant, showing frond creeping over branches of Coral- 

 lina chilensis, and sori borne on free, erect fronds, e. g., aX x 

 and x' . One-half natural size. 



Nitophyllutn tnultilobum. 



Fig. II. Tetrasporic plant, showing habit and characteristic transverse sori. 

 One-half natural size. 



Nitophyllum uncinaium. 



Fig. 12. Sterile plant, showing character of branching and characteristic 

 recurved apices of branches. One-half natural size. 



