SCLEBOTINIA. 283 



buliforrn. In one the edge of the cup was erect, extending 

 beyond the equator of the hemisphere ; in others the edge of 

 the cnp was recurved and sinuous. The number growing 

 from one sclerotium varied from 2 to 13, and the greater 

 the number, the less was the size of the individual. The 

 diameter of the largest cup was rather more than one-half, 

 and of the smallest about ^ s of an inch. The stalk was well 

 developed, being generally about the length of the diameter 

 of the cup, of a darker colour, and tapering somewhat from 

 above downwards. In one specimen the base of the stem at 

 its point of junction with the sclerotium was thickly 

 covered with hairs. (Currey.) 



Type specimen examined ; also specimens in Phil., Elvell. 

 Brit., n. 31. 



Sclerotinia Duriaeana. Quelet, Bull. Soc. Myc., i. 

 p. 115; Kehrn., Krypt.-Flora, Disc., p. 820 ; Sacc., Syll., viii. 

 n. 810. 



Ascophores 1-3, springing from a small, internally white, 

 externally black, elongated sclerotium 6-15 x 2 mm.; 

 ascophore closed at first, expanding until nearly or quite 

 plane, thin, fragile, glabrous, pale brown, 26 mm. broad; 

 excipulum and hypothecium brownish, formed of thin, 

 interwoven hyphae; stem cylindrical, firm, straight or 

 slightly wavy, brown, base darker and often downy, 12 cm. 

 long ; asci narrowly cylindrical, elongated, 8-spored ; spores 

 1-seriate, elliptical, ends blunt, straight or very slightly 

 bent, hyaline, continuous, 10-15 X 6-8 //,; paraphyses 

 slender, septate, thickened upwards. 



Peziza Duriaeana, Tul., Sel. Fung. Carp., i. p. 103, and iii. 

 p. 203, pi. xxii. figs. 20-24. 



Hymenoscypha Duriaeana, Phil. Brit. Disc. p. 115. 



In culms of Carex arenaria, and C. stricta. 



Conidial stage. Forming slightly effused, somewhat waxy 

 patches ; conidia hyaline, continuous, subglobose, 1 5-2 //. 

 diameter. 



Epidochium arabicus, Desmaz., xxii. Not. in Ann. Sci. Nat., 

 p. 19. 



Sphacelia ambiens, Sacc., Michelia, ii. p. 131. 



On culms of Carex arenaria and C. stricta. 



Specimen examined in Kehm's Ascom., n. 603. 



