ev . M. J. Berkeley and Mr. C. E, Broome on British Fungi. 375 



the papilliform ostiolum ; asci short, linear, obtuse ; sporidia 

 •001 inch long, biseriate, oblong, acute or obtuse, very slightly 

 curved, triseptate; articulation slightly torulose. 

 Plate XI. fig. 36. Sporidia magnified. 



893. S. {¥o\\\co\yi) anarithma,M.'s,. Sparsa obtecta j perithe- 

 ciis globosis ostiolo minuto papillseformi ; ascis clavatis ; sporidiis 

 biserialibus sublanceolatis uniseptatis medio constrictis. 



On Aira ccespitosa. Batheaston, March 1854 ; Bowood, Oct. 

 1853, C. E. B. 



Scattered, minute ; perithecia globose, penetrating the cuticle 

 by the small papilliform ostiolum ; asci clavate ; sporidia bi- 

 seriate, sublanceolate, strongly constricted in the centre, and 

 uniseptate, '0012 inch long. 



There is apparently another species on the same leaves with 

 an obscure ostiolum, and the sporidia of a slightly different 

 shape and •0008-*0009 inch long. We have not, however, seen 

 this in perfection, and therefore for the present omit it. 

 Plate XI. fig. 37. Sporidia magnified. 



894. Melugramma ruhro-notatum, n. s. Peritheciis confluen- 

 tibus, ostiolo papillseformi lateritio; ascis linearibus; sporidiis 

 oblongis 3-septatis. 



On elm bark. King's Cliffe, Dec. 185.2, M. J. B. 



At first, bursting thi'ough the cuticle and forming distinct 

 round patches, which, however, at length run together into a 

 nearly uniform mass ; perithecia confluent ; ostiolum papilli- 

 form, perforated, the perforation surrounded with brick-red meal ; 

 asci linear ; sporidia uniseriate, oblong, '0006 inch long, tri- 

 septate. 



A very remarkable species. When the red meal is rubbed off, 

 it looks as if it belonged to the tribe Concrescentes. 



895. M. oligospoj'um, n. s. Peritheciis opacis rugosiusculis ; 

 ostiolis demum pertusis ; ascis clavatis ; sporidiis magnis paucis 

 breviter fusiformibus. 



Twy cross. Rev. A. Bloxam. 



Forming roundish patches bursting through the cuticle; 

 perithecia opake, rather rough; asci clavate; sporidia shortly 

 fusiform, '0022 inch long, at first surrounded by a hyaline 

 border, changing from vmiseptate to triseptate; dissepiments, 

 especially the central one, constricted. 



Pl.\te XI. fig. 38. Aseus and sporidia magnified. 



896. Nectria Helminthicola, n. s. Carnea minuta globosa 

 parasitica glabra; ascis sursum angustioribus ; sporidiis bi- 

 quadrinucleatis. 



Parasitic on some large species of Helminthosporium. Bath- 

 easton, Jan, 1859, C, E. B. 



