OSTEOPA ROBERGEA. 67 



multi-septate, hyaline, 150-180 X 1*5 //,; para physes filiform, 

 about 1 5 //, thick, septate, branched at the apex, hyaline. 



Hysterium cinereum, Pers., Syn. Fung., p. 99. 



On dry branches of ash, poplar, willow, hazel, &c. 



Specimen from Fries examined. 



EOBEEGEA. Desm. 



Ascophore immersed in the substratum, somewhat coria- 

 ceous, flask-shaped, horizontal, reaching the surface by a 

 more or less vertical, elongated neck, mouth minute, 

 rounded, erumpent ; asci narrowly cylindrical, 8-spored, apex 

 thickened; spores needle-shaped, many-septate, hyaline, 

 nearly as long as the ascus, and arranged in a parallel 

 fascicle ; paraphyses very slender and very straight, hyaline. 



Robergea, Desmaz., Crypt. France, exs., ser. i. n. 1526 ; 

 Desm., Ann. Sci. Xat., ser. iii. 1847, vol. viii. p. 177; Sacc., 

 Syll., ii. p. 806; Eehm, Krypt.-Flora, Disc., p. 189. 



Readily distinguished by the flask-shaped ascophore lying 

 horizontally in the substance of the matrix, and reaching the 

 surface by an elongated, ascending, narrow neck. 



Robergea unica. Desmaz., Crypt. France, ser. i. 

 n. 1526 ; Desm., Ann. Sci. Nat., ser. iii. vol. viii. p. 177- 

 179; Sacc., Syll., ii. n. 5861; Eehm, Krypt.-Flora, Disc., 

 p. 190. 



Gregarious ; ascophore flask-shaped, buried in the wood, 

 horizontal, 2-2-5 mm. long, 1 mm. broad, reaching the 

 surface by means of a more or less vertical, elongated neck, 

 which bursts through the bark, often forming an elongated 

 slit, mouth of neck small, round, whitish, often surrounded 

 by white meal ; asci very long, narrowly cylindrical, apex 

 thickened ; spores needle-shaped, straight, many-septate, 

 hyaline, 400-550 x 1-1 ' 5 /x., arranged in a parallel fascicle ; 

 paraphyses filiform, simple, straight, about 1 /* thick, 

 colourless. 



On dry branches of ash, poplar, hazel, &c. 



Specimen examined from Desmaziere's Crypt. France, exs., 

 ser. i. n. 1526. 



p 2 



