PART X. 



By CBDRIC BUOKNALL, Mus. Bac, 

 Corresponding Memher of the Gryplogamic Sociely of Scotland. 



1311. LASiosi'[r«urA fulcita, n. sp. Plato XIII., lig. 8.* 



Peritbocia crowded, emergent, then superficial, ovate, rugose, sparselj' 

 clothed with short, septate, brown liairs, -04 mm. in diameter ; oatiola 

 large, deeply radiato-aulcato ; asci linear, 120 x S ; paraphyses filiform ; 

 eporidia elliptic, at first simple, then uniseptate, brown, 1-2-micleate, 

 12-13 X 5. 



On rotten oak brandies. 



The perithecia are erumpent between the fibres of the wood, some- 

 times at first covered by the bark, then naked and superficial. The 

 ostiola appear to be supported by from three to six radiating buttresses. 

 The sporidia are for a long time simple, and do not become uniseptate 

 until after they have changed from hyaline to brown. 



The follovs'ing species are either hitherto unrecorded as 

 British, or have occurred for the first time in .Britain 

 in this district : — 



1241. AciAiMCUs (Amanita) solitaiuus, Bull. Champ, t. 48. Fr. 

 Jlym. Eur., p. 22. Orevillea XF., p. 65. 



* The figures in Plates XI. to XIV. are all drawn to scale, the asci 

 and sporidia being magnified about 830, and the perithecia 70 diameters. 



120 



