DESCRIPTION OF THE PLATES. 



xxi 



8. Sphterojphoron coralloides, free spores, some of them destitute 

 of their dark granular epispore. 



9. 8. compressum; extremity of a ramule of thallus showing 

 the spermogones, magnified. 



10. Ditto, spermogone. 



11. Ditto, spermatia. 



12. Ditto, spores, one of them destitute of the epispore. 



13. Calicium hyjperellum. 



14. Ditto, stipes and apothecia, magnified. 



15. Ditto, spore. 



16. (7. turbinatum, parasitic on the thallus of Fertusaria com- 

 munis. 



17. Ditto, section of apothecium. 



18. Ditto, thecse and spores in different stages of develop- 

 ment. 



19. Ditto, section of spermogone. 



PLATE XVII. 



1. Bceomyces roseus. 



2. Ditto, stipes and apothecia, magnified. 



3. Ditto, section of apothecium, magnified. 



4. Ditto, theca and spores. 



5. Ditto, free spore. 



6. B. hyssoides, spore. 



7. Stereocaulon pcLScliale. 



8. Ditto, portion of thallus, magnified. 



