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



EXPLANATION OF PLATE L 



Nitophyllmn latisshnuin. 



Fig. I. Tetrasporic plant of late spring, with broad, flat veins and large 

 areoles. One-third natural size. 



Fig. 2. Cystocarpic plant, otherwise as in fig. i. One-third natural size. 



Fig. 3. Antheridial plant, mature, showing in the lower third the character- 

 istic wrinkled surface of the antheridial plant. One-third natural 



