Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 371 



derraide dcalbata supra ostiola nigrefacta sparsis ; sporis oblongo- 

 ellipticis. On dead stems of a Potamogeton, West of England, 

 C. E. Broome. 



Forming scattered very minute dark brown dots on discoloured 

 patches. Beneath each dot is seated a distinct subglobose smooth 

 perithecium, with no visible mycelium, very slightly conical above, 

 pierced with a round simple ostiolum. Spores oblong- elliptic, 

 variable in size, having occasionally but not constantly a spori- 

 diolum at either extremity. 



402. Leptothyrium Juglandis, Lib. PI. Crypt. Ard. no. 164. 

 On half-dead walnut-leaves, Bungay, Mr. D. Stock. 



403. Cryptosporium Caricis, Corda in St. Deutsch. Fl. t. 50. 

 On leaves of different Carices, Oxton, Notts, Rev. M. J. Berkeley ; 

 Spye Park, Wilts, C. E. Broome. 



The specimens given for this species by Rabenhorst, no. 1168, 

 are Arthrinium Caricola. Such errors are unfortunately too fre- 

 quent in his published specimens. 



404. C. Neesii, Cord. St. Deutsch. Fl. t. 51. On dead twigs 

 of birch, King's Cliffe; West of England, C. E. Broome. 



This is scarcely congeneric with the foregoing, though placed 

 in the same genus by Fries, who names it C. vulgare. 



405. Sphceronema leucoconium, n. s. Gregarium; peridiis hya- 

 linis piano -con vexis depressis subirregularibus floccis niveis insi- 

 dentibus. On decaying roots of Silesian beet, King's Cliffe, 

 Nov. 1847. 



Forming a thin stratum consisting of minute depressed sub- 

 hemispherical or irregular white perithecia simply pierced with 

 a minute pore, and seated on branched white threads, of which a 

 few spring from the sides. Spores minute, elliptic. 



We are unable to point out any closely allied species. There 

 is no papillseform or elongated ostiolum, but the convex peri- 

 thecium is merely pierced in the centre. 



406. Diplodia Cowdellii, n. s. Peritheciis liberis globosis atris 

 apice demum dehiscentibus ; sporis minoribus ellipticis unisep- 

 tatis. On the thick cotton curtains of a shower-bath which were 

 constantly damp. Oundle, Norths. Pointed out by Dr. Cowdell, 

 the author of the treatise on the Fungous Origin of Cholera. 



Forming dirty black spots on the matrix, but without any evi- 

 dent floccose stratum. Perithecia globose, at length cracking 

 above, black. Spores minute, elliptic, uniseptate. 



An obscure species, but remarkable for its singular habitat and 

 free mode of growth. 



406*. D. pauper cula, n. s. Peritheciis primum tectis de- 

 mum liberatis globosis ore prominulis ; sporis minoribus sero 

 uniseptatis. On dead twigs of plane, Batheaston, C. E. Broome. 



24* 



