Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 95 



X. — Notices of British Fungi. By the Rev. M. J. Berkeley, 

 M.A., F.L.S., and C. E. Broome, Esq. 



[Continued from vol. v. p. 466.] 



[With three Plates.] 



502. Hendersonia Stephensii, n. s. Peritheciis irregularibus 

 seriatis sub epidermidem fuscescentem linea ruptam latitantibus ; 

 sporis maximis ovatis reticulato-cellulosis. On dead stems of 

 Pteris aquilina, Bristol, H. O. Stephens, Esq. 



Perithecia membranaceous, oblong, irregular, arranged in a 

 single row beneath the cuticle, which exhibits little lanceolate 

 brown spots above them with a fissure down their centre. Spores 

 large, ovate, with about three transverse septa, each division 

 being again traversed by several vertical and transverse or some- 

 times oblique partitions. 



A very beautiful species, which probably exists in collections 

 confounded with Sph. filicina and Leptostroma filicinum. The 

 perithecia and spores are very remarkable. The latter are much 

 like those of Sporidesmium cellulosum, Fr. 



PiGGOTIA, n. g. 



Perithecia irregularia tenuissima subtus obsoleta in maculam 

 rugulosam confluentia, fissui'a lacerata rumpentia. Sporophorse 

 breves (demum tomiparse, Mont.) ; sporse majusculse obovatse 

 versus basim subconstrictse. 



503. P. astroidea Dothidea astroidea, Eng. Fl. vol. v. 



P. 2. p. 287. Asteroma Ulmi, Grev. Fl. Ed. p. 368 ; Fr. El. ii. 

 p. ] 52. On green leaves of elm, Springfield near Chelmsford, 

 H. Piggot, Esq. 



Jet-black, forming irregular roundish granulated or wrinkled 

 patches on the upper surface of the leaf, sometimes seated on 

 a yellow spot, but frequently without any discoloured border. 

 Perithecia suborbicular where solitary, but soon confluent, though 

 not making a uniform stratum, obsolete below, thin and shining 

 above, bursting irregularly by a jagged orifice ; spores oozing 

 from the ruptures and forming roundish discs, which at first 

 look like the hymenium of some Pesizce, broadly ovate, slightly 

 constricted towards the obtuse base. Sporophores short, at length, 

 as observed by Dr. Montague, tomiparous, as in Oidium. 



This has exactly the habit of Melasmia, and bears precisely the 

 same relation to Dothidea Ulmi that Melasmia does to Rhy- 

 tisma acerinum. It has some resemblance to Phoma, but is essen- 

 tially distinct in the very irregular mode of rupture, the tomi- 

 parous sporophores, as well as in habit. The perithecia are far 



