Rev. M.J. Berkeley and Mr. C. E. Broome on British Fungi. 381 



Immersed in the dead decorticated stems, and, with the excep- 

 tion of the black punctiform ostiolum, quite invisible, being con- 

 cealed by the woody tissue. Contents of the perithecia pale 

 salmon-coloured. Asci extremely delicate, linear ; sporidia 

 hyaline, uniseriate, oblongo-elliptic, minute, obtuse, with a single 

 nucleus at either extremity. 



Agreeing in habit with S. Berkeleyi, Desm., like which it is 

 not merely subcuticular or cortical. It differs essentially in its 

 depressed perithecia, shorter ostiolum, and more especially in its 

 shorter obtuse sporidia, which closely resemble those of a Phoma. 



Plate XI. fig. 33. a. Ascus ; b. sporidia. Both more or less magnified. 



A Spharia occurs on leaves of Aira caspifosa at Batheaston, 

 with slightly longer sporidia and more exposed perithecia, which 

 we at first referred to this as a variety. As it grows on leaves 

 the perithecia are necessarily less immersed, and the difference in 

 the sporidia is very slight. We are now inclined to consider it 

 rather as a form of S. phceosticta. 



648. S. (Caulicolse) tosta, n. s. Peritheciis minutis pallidis 

 depressis epidermide adusta tectis; ascis linearibus; sporidiis 

 uniserialibus ; sporidiis brevibus elliptico-cymbiformibus uni- 

 septatis. On dead stems of Epilobium hirsutum, Budloe, Wilts, 

 Feb. 1843. 



Perithecia depressed, subglobose, pale, concealed under broad 

 spots which look as if they had been scorched, the part of the 

 cuticle above each perithecium being darker. Asci linear; spo- 

 ridia uniseriate, short, elliptico-cymbiform, uniseptate, very pale. 

 This species has somewhat the habit of S. tomicum, S. clypeata, 

 &c., but is very distinct. 



Plate XI. fig. 34. a. Ascus ; b. sporidia. Both more or less mag- 

 nified. 



649. S, (Caulicolse) tenebrosa, n. s. Sparsa tecta epidermide 

 prosenchymateque tenebrosis ; peritheciis depressis ; ascis amplis 

 cylindrico-clavatis ; sporidiis fuscis bipartitis articulis subconicis 

 endochromatibus binis repletis. On dead stems of Arctium, 

 which are completely blackened by the fungus, King^s Cliffe, 

 May 1, 1843. 



Perithecia scattered, irregularly covered by the cuticle and 

 subjacent cells which are traversed by dark cellular mycelium, 

 which here and there gives rise to short Toruloid threads. Asci 

 large, cylindrical, obtuse, slight, attenuated below ; sporidia bi- 

 seriate, composed of two apposed irregular cones which contain 

 at first a single large globule, but at length have two irregular 

 endochromes. 



A very fine species remarkable for its curious mycelium and 



