14 FUNGUS-FLORA. 



Subfam. I. ASCOMYCEAE. 

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



Parasitic on living plants; causing the affected parts to 

 become discoloured and variously blistered or contorted ; 

 ascigerous hypbae ramifying in the tissues of the host, and 

 giving origin to the asci, which burst through the cuticle and 

 form a continuous bloom on the siirface ; asci either spring- 

 ing directly from the hyphae without a transverse septum, 

 or furnished with a transverse septum at some distance from 

 the bae, the portion below the septum being called the 

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

 spores produce conidia while yet in the ascus, which then 

 appears as if containing many spores. 



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

 vol. x., p. 344; Phil., Brit. Disc., p. 399. 



Taphrina,} f ^ 



Exoascus, \ 



A. Mycelium perennial, spreading through the intercellular 

 spaces of the tisnue 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 somewhat truncate, or sometimes 



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

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

 of same; X 300; Fig. 52, Durella connivens, Rehm., 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. 5G, liuitorclla resinae, Mudd, plants ; nat. 

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

 spores of same ; X 500 ; Fig. 59, Colpoma quercinum, 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 7~~ 



750. 



