ASCOMYCES. 403 



Craigiebuckler Wood, Aberdeen ! (Dr. James W. H. 

 Trail). 



B THE MYCELIUM SPREADING ONLY BETWEEN THE 

 EPIDERMAL CELLS AND THE CUTICLE. 



(a) Asci furnished with a stem-cell. 

 5. Ascomyces Tosquinetii. West. 



Producing blisters on the upper surface of the leaves ; 

 asci cylindrical or cylindraceo-clavate, round at the sum- 

 mit, truncate at the base ; sporidia 8, spherical, 4 o/n 

 broad. 



Ascomyces Tosquinetii West in " Bull. 1'Acad. Belg.," 

 ser. 2, vol. xi. p. 655 ; Phil, and Plow., " Grevillea/' vi. p. 

 25 ; Gill., " Champ.," p. 201. Exoascus Alni De Bary 

 in Fckl., " Symb. Myco.," p. 252. Taphrina alnitorqua 

 -Tul., " Ann. Sc. Nat./' ser. 5, vol. 5, p. 130. Exoascus 

 Tosquinetii Sacc., " Mich./' iv. p. 433. 



Exs. Fckl., "F. Rh.," 2276; Rehm's "Asco," 217; 

 Phil., "Elv. Brit.," 150; Rabh., "Fung. Eur.," 1837; 

 Thum., " Fung. Aus.," 183 ; and " Mycoth. Univ.," 81. 



On living leaves of Alnus glutinosus. July and 

 August. 



Name After M. Tosquinet. 



6. Ascomyces Alni. B. and Br. 



Deforming the inflorescence ; sporidia numerous in 

 each ascus. 



Ascomyces Alni B. and Br., "Ann. Nat. Hist./' No. 

 1628 ; " Grevillea," v. p. 62 ; not Exoascus Alni De 

 Bary. Exoascus alnitorqua, form Alni incance Kiihn 

 in Rabh., " Fung. Eur.," No. 1616. Ascomyces Tosquinet ii 

 (West) Kunze, " Fung. Sel./' 369. Exoascus Alni, De 

 Bary, form strobilina Thum. in Rehm's " Asco.," 518. 



Exs. Rabh., " Fung. Eur.," 1616; Kunze, "Fung. Sel.," 

 369; Rehm, "Asco./' 518. 



On female catkins of Alnus glutinosus. 



Differs from other species in the asci containing more 

 numerous sporidia, which are only '0002 to 'Ol03 inch 



