37 

 Gen. 14. OSTROPA Fr. 



1. 0. cinerascens Schz. On wood of Liriodendron. Betli. (S.), 



2. 0. hysterioides Sch. On bleached oak. Beth. (S.). 



3. 0. rugulosa Schz. On trunks. Penus. (S.). 



4. 0. sphaerioides Sdiz. On wood. N. Eng. (S.). 



It is not assumed by any means that this synopsis is perfect and 

 complete. Errors are readily made, and verification is not easily 

 accomplished with the waters of the Atlantic rolling between us ; 

 yet it is hoped that approximate accuracy has been attained with 

 the material at our disposal. For additions, suggestions, and cor- 

 rections, we shall always be thankful, and if names have been unin- 

 tentionally'omitted, or any doubt should arise as to the accuracy of 

 our determinations, it will always be our desire to revise any error 

 if such can be demonstrated, since our object is the advancement of 

 science, and not the perpetuation of error. All American mycolo- 

 gists are urged to assist us in the same spirit. 



2 Geosvenor Villas, 

 Junction Road, Upper Holloway, London. 



