1. 



G. 



2. 



G. 



3. 



G. 



4. 



G. 



5. 



G. 



16 M. FOSLIE. [1899 



the conceptacle being hemispheric or subconical, with a coarse 

 apical pore; sporangia with elongated foot arising from any part 

 of the almost plain disc, the latter connected with the roof b}' 

 delicate filaments frequently disappearing towards maturity. 



Conceptacles of cystocarps superficial, conical, constricted above 

 the middle or with an elongated tip and a coarse apical pore; carpo- 

 spores arising from any part of the almost plain or cup-shaped 

 ,,conjugation cell". 



brassica-florida (Harv.) Fosl. (incl. L. mamillosum Hauck?) 



mamillosum (Hauck) Fosl. (L. Hauckii Rothpl, Fosl; L. 



ramosissimum Reuss, ex parte?) 



mamillare (Harv.) Fosl. 



verrucosum Fosl. 



frutescens Fosl. 



f. tyyica. 



f. flabelliformis Fosl. 

 6. G. moluccense Fosl. (incl. Lithoph. Tamiense et L. pygmaeum 



Heydr.?) 



Setchelli Fosl. (incl. Lithoph. fibulatum Heydr.?) 



Notarisii (ljuf.) Fosl. 



f. genuina. 



f. propinqua Fosl. 



Chalonii (Heydr.) Fosl. (= G. Notarisii f.?) 



insidiosum (Solms) Fosl. (= G. Notarisii?) 



rubrum (Vin.) Fosl. mscr. (= G. Notarisii?) 

 G. ? disciforme (Vin.) Fosl. mscr. (== G. Notarisii f.?) 



elatocarpum Fosl. 



Gen. Lithophyllum Phil. emend. 



Conceptacles of sporangia immersed or subprominent, the cen- 

 tral parts of the roof at first convex, afterwards more or less de- 

 ■corticated, partly at length forming a depressed point-like deepening 

 on the surface of the frond, with a central pore ; sporangia arising 

 around the periphery of the more or less overarched disc, the latter 

 at first connected with the roof by a parenchymatic tap, the centre 

 of which upwards ending through the roof in a cylindric gelinated 



7. 



G. 



8. 



G. 



9. 



G. 



10. 



G. 



11. 



G. 



12. 



G. 



13. 



G. 



