ASCOMYCETES 365 



Spores continuous, hyaline. 



Trichosphaeria, Fckl., Symb. Myc., p. 144. Perithecia 

 subglobose, superficial, sparsely or densely pilose, some- 

 times seated on a byssus ; asci oblong or cylindrical, 8- 

 spored ; spores continuous, ovate, oblong-ovate, or sub- 

 cylindrical, very rarely appendiculate, always hyaline. 



Trichosphaeria sacchari, Massee, Ann. Bot., 1893, p. 

 515, pi. xxvii. Perithecia broadly ovate, blackish- 

 brown, sparsely clothed with long, dark, rigid hairs ; asci 

 cylindrical ; spores 8, obliquely i-seriate, hyaline, con- 

 tinuous, elliptic-oblong, 8-9X4^; paraphyses absent. 



Melanconium stage ; oozing out to the surface of dying 

 canes in the form of black, curved tendrils ; conidia pro- 

 duced in conceptacles situated in a stroma formed under 

 the epidermis, i-septate, pale-brown, cylindrical, straight or 

 very slightly curved, 14-1 5X3^-4 p<- 



Macroconidia. Forming an intensely black, velvety layer, 

 lining cracks and cavities in decaying canes ; conidia in 

 chains originating within the ruptured apex of a hypha ; 

 terminal conidium globose, 20-25 /A diam., the others barrel- 

 shaped, 18-20X12 /A, blackish-brown. 



Microconidia. Similar in origin and structure to the 

 Macroconidia, but smaller ; growing on the diseased surface 

 of the cane, and forming black, velvety patches. 



Guignardia, Viala and Ravaz. Perithecia innate, lenti- 

 cular, usually with a projecting mouth, membranaceous ; 

 asci 8-spored, usually subclavate ; spores elongated, con- 

 tinuous, hyaline ; paraphyses absent. 



Guignardia bidwellii, Viala and Ravaz, Bull. Soc. Myc. 

 France, viii. p. 63 (1892) Spermogonia (= Haemaspora 



