﻿Plate II. Fig. I a : plant in nat. state (nat. size) ； I b : three 

 fronds detached (nat. size.) ― Fig. 2 : portion of frond, slightly 

 magd. ― Fig. 3 : cross-section of frond, -. ― Fig. 4 : portion of 

 the same, ― Fig. 5 : longitudinal section of frond, -^. ― Fig. 



6 : portion of frond bearing tetraspores, moderately rnagd. 一 Fig. 



7 : cross section of the same, - —-. ― Fig. 8 : portion of frond 

 bearing cystocarps, 号 . — t ig. g : cystocarp, moderately magd. 

 一 Fig. 10 : longitudinal section of cystocarp, -^. 



