SCLERODERRIS. 121 



Scleroderris, Fries, Syst. Myc., ii. p. 178; Sacc., Syll., viii. 

 p. 594. 



Cerangium and Dermatea (in part) of some authors. 



The 3-many-septate, hyaline spores stamp the present 

 genus. 



* Growing on Angiosperms. 



Scleroderris ribesia. Karsten, Myc. Fenn., i. p. 215 ; 

 Eehm, Krypt.-Flora, Disc., p. 209 ; Sacc., Syll., viii. n. 2456. 

 (figs. 48-50, p. 91.) 



Erumpent ; ascophores 4-12, crowded on a common stroraa, 

 turbinate, stem-like base more or less developed, at first 

 closed then expanded, but the minutely ragged margin 

 persistently incurved, externally blackish-brown, margin 

 minutely striately wrinkled, glabrous, coriaceous ; excipulum 

 composed of parallel, septate, brown hyphae that pass into a 

 very narrow parenchymatous cortex ; disc yellowish brown 

 or greyish ; 2-4 mm. across, 1-2 mm. high ; asci narrowly 

 cylindric-clavate, 8-spored; spores very narrowly clavate, 

 apex rounded, base sharp, straight many-guttulate then 3-5- 

 septate, hyaline 25-40 x 3-4 //., irregularly 2-seriate ; para- 

 physes filiform, hyaline. 



Cenangium ribis, Fries, Syst. Myc., ii. p. 179; Phil., Brit. 

 Disc., p. 349. 



Peziza ribesia, Pers., Tent. Disp. Meth. Fung., p. 35. 



On twigs of red and black currant. 



Specimen examined in Fries, Scler., Suec., n. 31. Also 

 Eehm, Ascom., n. 422, and Vize, Micro-Fung. Brit. n. 485. 



Pycnidia either separate or springing from the ascophores, 

 subglobose, brown, glabrous, greyish and wrinkled when 

 dry; substance of excipulum minutely parenchymatous; 

 conidia elliptic-oblong, ends obtuse, hyaline, usually 2 

 guttulate, 6-11 yu,; conidiophores subulate, about 3 //, long. 



Sphaeria ribesia, Link, Hdbk. iii. p. 76. 



Fuckelia ribis, 13ourd., Diss. Myc., iv. p. 135. 



Scleroderris seriata. Eehm, Krypt.-Flora, Disc., 

 p. 211; Sacc., Syll., viii. n. 2548. 



Ascophores erumpent in narrow, black lines 12 cm. long, 

 bursting through the bark at right angles to the long axis 



