PLATE IV. 



A. 



Gek. 6. — OLFEB.SIA, Saddi. [Synopsis p. XTii.] 



Pig. 1. Fragment of sterile frond of O. oeevina, Zze, (n. s.) 



2. Pinna of fertile ftond of the same (n. s.) 



3. Spore-case. 

 i. Spores. 



6, Fragment of sterile fiond of 0. BVSDZiisksi,Moore (n.s.) 



B. 



G-EN. 7.— SOROMANES, Me, [Synopsis p. iviii.] 



FiGr. 1. Fragment of sterile &oiid of S. sesbatifolia, F4e (n.s. ) 



2. Fertile pinna of tlie same in a somewhat monstrous or 



partially fertile state (n. s.) 



3. Segments of the same, enlarged. 



4. Spore-case. 

 6. Spores, 



