ClipArt ETC
"Scleroderris fuliginosa. b, ascus containing spores and accompanied by paraphyses ... S. fuliginosa is said to be parasitic on twigs and branches of willows in Europe and North America." -Whitney, 1911

Willow Canker

"Scleroderris fuliginosa. b, ascus containing spores and accompanied by paraphyses ... S. fuliginosa…

"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm; N, nucleus; NL, nucleolus; B, successive stages in nuclear division with the ascus; at X, early anaphase, nuclear membrane, NM, still persisting; R, kinoplasmic radiations from the poles; at Y, telophase, new nuclear membrane not yet formed; Z, a later stage where the nuclear membranes demark the daughter nuclei." -Stevens, 1916

E. Communis Cell

"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm;…