Rev. M. J. Berkeley on British Fungi. 433 



tusis, subtruncatis. On an elm twig. Grace Dieu, Leic. 

 Mr. Churchill Babington. Very near to the foreign S. late- 

 ritium and cinnabarinum, with which it forms a distinct 

 group. It is less fasciculate than either, and is of a brighter 

 colour. Receptacle composed of subdichotomous filaments, 

 crowned with abortive sporidia, which are about one-third 

 shorter than those which are perfect. Perfect sporidia ob- 

 long, obtuse, almost truncate. 



Tab. XII. fig. 14. a, S. aurantiacum, nat. size; b, ditto, magnified; c, 

 filaments of the receptacle which arise from the stem, with abortive spores ; 

 d, sporidia, both highly magnified. 



224. Phycomyces nitens, Kze., Myc. heft 2. p. 113. t. 2. f. 9. 

 Byssus olivaceus, Winch, Fl. Northumb. p. 121. in Trans, of 

 Newcastle Nat. Hist. Soc. 1831. On the walls of an oil-cel- 

 lar. Newcastle. Mr. Winch. I have been enabled to deter- 

 mine the above synonym by the assistance of Dr. Johnston, 

 in whose collection, which has been kindly submitted to my 

 inspection, there is a specimen. 



225. Mucor succosus, n. s. Minutissimus ; hyphasmate 

 spongioso ; sporangiis minutissimis globosis fiavis, dein oli- 

 vaceis ; columella minuta. On the cut surface of stumps of 

 Aucuba Japonica, which had been killed by frost. May, 

 1838. Apethorpe, Norths. Forming small pulvinate orange- 

 ochre spongy masses, which, while there is an abundance of 

 nutriment, do not fructify; but when gathered, produce a forest 

 of exceedingly minute globose yellow sporangia, not indeed 

 visible to the naked eye, which at length become olive. Co- 

 lumella very small, and little more than a slight swelling of 

 the top of the stem. 



Tab. XII. fig. 15. a, M. succosus, slightly magnified ; b, threads from the 

 barren plant ; c, d, fertile fiocci ; e, sporidia; /, granules and an abortive 

 sporangium from the barren plant, more or less highly magnified. 



226. Sporocybe nigrella, n. s. Minutissima, nigra, stipite 

 simplice, tenuissimo, articulato ; sporidiis globosis glabris. 

 On dead leaves of grass. King's ClifFe, Leicestershire. Mr. 

 Churchill Babington. Extremely minute, not one-fourth of 

 a line high, dark black. Stem slender, with 4 — 5 articulations ; 

 heads globose ; sporidia globose, smooth, with a globose nu- 

 cleus. The whole plant is dark, so that it requires a good 

 light to see the articulations of the stem, which are, however, 

 very evident. It is very near to Periconia atra } Corda ; but the 

 stem of that species is figured as closely annulated, a structure 

 quite at variance with that of the present species ; and the spo- 

 ridia appear to be less transparent. I suspect that under a 

 very superior microscope they would appear very minutely 

 scabrous, but I am not certain whether this is the case ; and 



Ann. Mag. N. Hist. Vol. vi. 2 f 



