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



This is the prince of the genus, resembling somewhat H. folli- 

 culatum, but with spores exceeding the threads in length, and 

 the common episporium extremely thick instead of being narrow 

 as in that species. 



Plate V. fig. 5. a. Flocci magnified; b. tip of young thread; c. ma- 

 tiu-e spore. 



508. H. tiirbinahim, n. s. Fills tenuibus simplicibus; sporis 

 elongato-turbinatis truncato-apiculatis 4-7-articidatis opacis. On 

 dead wood, Speke Hall^ Lancashire, July 1840. 



Patches thin, effused, finely velvety ; threads short, linear, 

 slender, obscurely articulated even when most transparent ; 

 spores of a deep rich brown, varying greatly in size and length, 

 but always more or less turbinate, attenuated greatly below, 

 obtuse above, with a sudden more or less truncate apiculus, 

 which often seems as if a joint had separated from it. 



Distinguished from all described species by the peculiar shape 

 and character of its spores. 



Plate V. fig. 6. Spore highly magnified. 



508*. H. Rousselianum, Mont. Ann. d. Sc. Nat. ser. 3. Nov. 

 1849, p. 300. With Sporoschisma mh-abile, B. & B. 



509. Triposporium elegans, Corda, Ic. Fasc. 1. fig. 220. On 

 decorticated oak, Brockley Combe, Somersets., &c., Feb. 1845. 



The spores in this species vary considerably in length and in 

 the number of articulations. We have also a Triposporium from 

 Mr. Stephens on a leaf mixed with Fumago, but there is too little 

 of it to say anything very positive about it. 



510. Helicoma Millleri, Cord. Ic. Fasc. 1. tab. 4. fig. 219. On 

 dead wood. Rev. T. Salwey. Without any specific locality. 



There is some difficulty in referring the specimen to Corda's 

 species in consequence of the spire of the spores being in general 

 open. It is sometimes however quite closed up, so that the 

 distinction between Helicosporium and Helicoma is scarcely te- 

 nable. The threads also vary much. In specimens from Low^er 

 Carolina the spores are precisely those of Corda's species, but the 

 threads very differently articulated. Helicosporium obscurum is 

 represented by Corda as having much more slender spores, atte- 

 nuated threads and very close articulations, which does not agree 

 with our plant. On the whole, we think the best course is to 

 regard it as a variety of H. Mulleri. 



511. Cladotrichum triseptatum, n. s. Furcato-ramosissimum 

 totum articulatum ; articulis superioribus inflatis ; sporis oblongis 

 obtusissimis medio constrictis triseptatis. On a dead stump, 

 King's Cliffe, July 1848. 



Widely effused, forming a thin black powdery stratum ; flocci 

 forked and branched, septate from the base, upper articulations 



