1869.] ^^^ [Wood. 



GEN. TETMEMORUS. 

 T. GKANULATUS. {Breb .) Ralfs. 

 Hab. Prope Philadelphia. 



GEN. PLEUROTAENIUM. 



p. TRABECULA. (EJivb.) Nacg. 

 Hab. Prope Philadelphia. 



GEN. SPIROTAENIA. 



s. BRYOPHiLA. {Breb.) Rabenlwrst. 

 Hab. Prope Philadelphia. 



GEN. MICRASTERIAS. 

 M. TRUNCATA. {Covda.) BHb. 

 Hab. Prope Philadelphia. 



M. jENNERi. Ralfs. 

 GEN. STAURASTRTJM. 



S. PUNCTUALATUM. Breb. 



Hab. Prope Philadelphia. 



GEN. DIDYMOPRIUM. 



DR. GREVIIill. KtZ. 



Hab. Prope Philadelphia. 



GEN. COSMARIUM, 



C. CUCUMIS. 



Hab. Prope Philadelphia. 



c. BOTRYTis. (Bory.) Menegh. 

 Hab. Prope Philadelphia. 



FAM. ZYGNEMACEAE. 



Remarks. — In this family I only enumerate such species as I have found 

 in fruit, since there can be no certain identification of sterile jjlants. My 

 list I am well satisfied, however, by no means completely represents the 

 fauna of the neighborhood of Philadelphia. 



GEN. RHYNCONEMA. 



R. ELONGATA, 8p. NoV. 



R. articulis vegetativis diametro 7-20 plo longioribus ; articulis spori- 

 feris multo brevioribus, valde tumidis ; cytiodermate utroque fine pro- 

 tense et replicato ; fascia unica, laxissime spirali ; anfractibus plerumque 7 ; 

 sporis ellipticis, diametro 1-2| plo longioribus. 



Sterile joints 7-20 times longer than broad ; fertile joints much 



