Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 459 



Scattered over the twigs and always concealed by the cuticle, 

 which cracks in the centre of each little pustule. Stroma obso- 

 lete. Sporophores elongated ; spores minute, brown, shortly lan- 

 ceolate, with two or three septa. 



This has very much the habit of an Hendersonia, but there are 

 no perithecia. We cannot place it in Stilbospora, because the 

 spores are not ejected as in the species of that genus. It is in 

 fact just intermediate between Stilbospora and Coryneum. The 

 spores vary slightly, but not sufficiently to justify the proposition 

 of more than one species. 



452. Sporidesmium polymorphum, Cord. Ic. Fasc. 1. fig. 119. 

 On decorticated oak, Wraxall, Som., Feb. 1845, C. E. Broome. 



Remarkable for its closely septate peduncle. Corda's speci- 

 mens are on white birch. 



453. S. antiquum, Cord. Ic. Fasc. 3. fig. 11. 



Var. compactum, Berk. & Br. On hard wood, Wraxall, Som., 

 C. E. Broome. 



Our species agrees in general character with Corda's, of which 

 we have a specimen from the author, but it is more compact and 

 composed of smaller cells. 



454. S. pyriforme, Cord. Ic. Fasc. 1. fig. 116. On decayed 

 boards, Luciefelde, Shropshire, Rev. W. A. Leighton, July 1842. 



Our species seems to be exactly what is figured by Corda, but we 

 have no authentic specimen. It forms a thick crust-like stratum. 



455. S. melanopum, Berk. & Br. Sporis subglobosis basi cel- 

 lulosa suffultis, stratum e pluribus soris congestum efformantibus. 

 Spiloma melanopum, Ach. Meth. t. 1. fig. 3; Eng. Bot. ! t. 2358. 

 Common on the bark of apple-trees. 



We are indebted to Mr. Borrer for authentic specimens. Form- 

 ing broad black patches made up of many smaller spots. Spores 

 subglobose, very opake, apparently simple, but really composed 

 of numerous cells supported by a cellular base, which varies 

 much in length and breadth. In some specimens, but not in all, 

 short articulated filaments occur, which seem to belong to a spe- 

 cies of Helminthosporium. 



456. S. scutellare, Berk. & Br. Soris scutellseformibus ; sporis 

 late obovatis cellulosis, basi brevi cellulosa suffultis. On larch- 

 bark, Ulting, Essex, H. Piggot, Esq. 



Sori scattered, minute, scutelliform ; spores obovate, evidently 

 cellular, springing from a cellular stroma and supported by a few 

 variously arranged cells, which are sometimes reduced to merely 

 one. 



Tetraploa, n. g. 



Sporse nudse ut plurimum 4-articulatse quaternatim connatac, 

 quseque seta coronata. 



457. T. arista ta. On grass, Westhay Woods, King's ClifFe. 



