SPHAERIALES 



275 



Fig. 183. — Gnomonia veneta. a, Perithecium. Secondary spore forms. Glocosporium 

 nervisequum, b, on living leaves. Sporonema Platani, c, on rotting leaves. Discula platani, 

 d, in bark under the lenticels. (a X 250; b X 260; c X 160; d X 85; after Klebahn, 1905.), 



