14 FUNGUS-FLORA. 



Subfam. I. ASCOMYCEAE. 

 ASCOMYCES. Mont. & Desm. (figs. 5-9, p. 12.) 



Parasitic on living plants; causing tte affected parts to 

 become discoloured and variously blistered or contorted; 

 ascigerous bypbae ramifying in tbe tissues of tbe bost, and 

 giving origin to tbeasci, vsrbicb burst tbrougb the cuticle and 

 form a continuous bloom on tbe surface ; asci eitber spring- 

 ing directly from tbe bypbae witbout a transverse septum, 

 or fuinisbed witb a transverse septum at some distance from 

 tbe base, tbe portion below tbe septum being called tbe 

 stem-cell ; asci primarily 8-spored, but in most species tbe 

 spores produce conidia wbile yet in tbe ascus, wbiob tben 

 appears as if containing many spores. 



Ascomyces, Montague & Desmaz., Ann. Sci. Nat., Ser. iii., 

 vol. X., p. 344; Pbil., Brit. Disc, p. 399. 



TaphrinaA ^j ^^^^^^^_ 



Exoascus, j 



A. — Mycelium, perennial, spreading through the intercellular 

 spaces of the tissue of the young shoots of infected plants in the 

 spring. 



* Ascus with a transverse septum near the base, cutting off a 

 stem-cell. 



Ascomyces pruni. B. & Br., Ann. Nat. Hist, n. 1629 ; 

 ser. iv., vol. xvii., p. 145 ; Phil., Brit. Disc, p. 400. 



Asci oblong-clavate, apex somewbat truncate, or sometimes 



dehiscence ; slightly x ; — Fig. 49, ascus and paraphyses of same ; 

 highly X ; — Pig- 50, free spores of same ; x 300 ; — Fig. 51, stylospores 

 of same ; X 300 ; — Fig. 52, Durella connivens, Eehm., group of plants ;■ 

 nat. size ;— Fig. 53, a single plant of same in an expanded condition ; 

 slightly X ; — Fig. 54, ascus and paraphysis of same ; highly x ; — Fig. 55, 

 free spore of same ; x 300 ; — Fig. 56, BiutoreUa resinae, Mudd, plants ; nat. 

 size; — Fig. 57, ascus and paraphyses of same; x 300; — Fig. 58, free 

 spores of same ; x 500 ; —Fig. 59, polpoma quercinwm, Wallr., group of 

 fungi on oak branch.; nat. size ; — Fig. 60, sections of same ; slightly x ;■ — 

 Fig. 61, asci and paraphyses of same; highly x ;— Fig. 62, portions' of 

 two spores of same in different stages of development; x 750. 



