PLATE XVIII. 



A. 



Okn. 32.— IiOMAGRAMMA, J. Sm. [Synopsis p. xxx.] 

 Fig. 1. Portion of fertile pinna of L, pteboides, J. Sm. (n. s.) 



2. Fragment of the same enlarged. 



3. Fragment of sterile frond of the same. 



4. Spore-case. 



6. Sporangiastre. 



B. 



Gen, 33.— DRYMOGLOSSUM, ^resl. [Synopsis p, xxxi.] 

 Fig, 1. Fragment of sterile frond of D. lakoeolatum, J". 8m. 



2. Fragment of fertile frond of the same. 



3. Spore-ease, 

 4 Spores. 



