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



EXPLANATION OF PLATE IX. 



Nitophyllii 111 ruprech tia n 11 in . 



Fi^. 38. Portion of tetrasporic plant, showing rather wide, h'near, flabellately 

 disposed sori. Pour-fifths natural size. 



Fig. 39. Same, showing transition from linear, flalsellate sori to rounded sori 

 borne on marginal proliferations. Four-fifths natural size. 



Fig. 40. Same, showing sori borne only on marginal proliferations. Four- 

 fifths natural size. 



Nitophylliiut violaceum. 



Fig. 41. Portion of tetrasporic plant, showing narrow, linear, flabellately 



disposed sori. Four-fifths natural size. 

 Fig. 42. Same, showing transition from linear, flabellate sori to rounded, 



inframarginal sori. Four-fifths natural size. 

 Fig. 43. Same, showing rounded inframarginal sori. Four-fifths natural 



size. 



Nitophylbim latissinmm. 



Fig. 44. Detail of tetrasporic sori, showing venation, and areoles occupied 

 by minute sori. Four-fifths natural size. 



Nitophyllmn andersonianiint . 



Fig. 45. Portion of tetrasporic plant, showing sori as rounded or elliptical 

 patches on distal segments of frond. Four-fifths natural size. 



Nitophylluni multilobum. 



Fig. 46. Portion of plant, showing characteristic transverse sori. Four-fifths 

 natural size. 



