ASCOMYCETES 367 



Sphaerella tabiflca, Prill, and Dell., Bull. Soc. Myc. 

 France, vii. 23, figs (1891). — Perithecia rotund, brown, 

 erumpent, mouth papillate, 150 /^ diam. ; asci oblong- 

 clavate, obtuse, stipitate, 60-12/*; spores hyaline, 2-celled, 

 upper cell ovate-rotund, lower narrower, slightly attenuated, 

 septum below the middle, constricted, 21 x 7'S/t, 2-seriate; 

 paraphyses absent. 



Conidial stage {Pkyllosticta tabifica. Prill, and Dell., 

 Phonia betae, Frank). — Conceptacles subglobose, pierced 

 by a pore at the summit; conidia escaping in a muci- 

 laginous tendril, elliptical, hyaline, 5-7 X 3-4 fi. 



Gnpmonia, Ces. and De Not. — Perithecia covered or 

 erumpent, glabrous, submembranaceous, often scattered, 

 ostiolum more or less elongated, cylindrical, central, or 

 lateral ; asci 4-8-spored, tunic often perforated at the 

 apex ; spores elongated, i-septate, hyaline ; paraphyses 

 usually absent. 



Gnomonia erythrostoma, Auersw., Myc. Eur. Fyren., p. 

 26, f. 127. — Perithecia innate, erumpent, shortly rostellate, 

 texture parenchymatous, rufescent ; asci cylindrical, shortly 

 stipitate, apex obtuse, apical lumen bifoveolate, 8-spored, 

 loo-i 10 X 12-15 i" J spores distichous, cylindric-oblong, 

 rounded at both ends, spuriously i-septate below the 

 middle, not constricted, 4-guttulate, hyaline, furnished with 

 a small curved appendage which soon disappears, i8 X 5-6 

 ju.; paraphyses absent. Fuckel describes spermagonia as 

 follows : — Resembhng Septoria. Perithecia ? subsuperficial, 

 gregarious on large, discoloured spots ; spermatia filiform, 

 continuous, curved, elongated, hyaline. 



Dipaorthe, Nits. — Perithecia membranaceous or subcoria- 

 ceous, often greyish within, most frequently furnished with 



