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 Sti/bospora, 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. Fase. 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. Fase. 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 scutelleeformibus ; 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. 
Spore nude ut plurimum 4-articulate quaternatim connate, 
queeque seta coronata. 
457. T. aristata. On grass, Westhay Woods, King’s Cliffe. 
