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



tluis very light compared with T. astivum, Vitt. The veins co- 

 here very loosely, so that it is difficult to cut the plant in half 

 without breaking it into frustules, which is not the case in 

 T. cestivum, Vitt. It shrinks very much in drying : some speci- 

 mens were attacked by worms, and the flesh of these became 

 quite black when dry. The sporangia have much longer stalks 

 than those of Tuber cesticum, Vitt. The sporidia closely resemble 

 those of that species, but are slightly longer compared with their 

 width, and have somewhat shallower cells. It ranges from the 

 size of a walnut to that of a hen's egg. 



In deep sand, Bowood, Wilts, Oct. 1847. 



58.2. T. sclcroneuron, n. s. Uterus rubro-fuscus, cartilagineus, 

 globoso-lobatus, minute verrucosus etiam subl?evis, rimis strictis 

 exaratus ; venje irregulares, pr?eruptae, e rimis et variis peridii 

 puncti exortpe, centrum versus cinerefc, superficie tamen a spo- 

 ridiis maturis rubro-fusca^. Odor debilis subaromaticus. Spo- 

 ridia rubro-fusca ovata minute celiulosa. 



This species differs from Tuber rufuiii, Vitt., in its firmer car- 

 tilaginous texture, deep red-brown colour, in the form of its spo- 

 ridia, which are ovate, not elliptic-elongate, and in its faint aro- 

 matic odour. The venation also is more broken and interrupted. 

 Tuber rufum, Vitt., appears to be its nearest ally. When dried, 

 Tuber sclcroneuron becomes as hard as a piece of wood. 



Bowood, Wilts, Oct. 1847. 



Onijgena apiis,r\. s. reridium album, sessile, globosum, my- 

 celio teiiui candido insidens, extus tomentosum, gleba matura 

 rubro-fusca. On decaying bones under dead leaves and moss, 

 Bristol, Nov. 1847. 



Peridia globose, white, sessile, seated on a delicate white my>- 

 celium, about the size of rape-seeds, under a lens tomentose, but 

 even, not rugose ; sporidia ovate-elliptic, containing one or two 

 granules colouring the internal mass of a dark chocolate. 



O ay genu corvina, Alb. & Schwein., an analysis of which is 

 given in the ' Annales des Sciences' for June 1844, closely re- 

 sembles this species in structure. The only differences apparent 

 are the absence of a stipes, and of the outer stratum of globose 

 cells, as also of the asperities of the surface in that plant. 



583. Patellaria citrina, n. s. Cupulis plaiiis extus pallidis, 

 hymenio citrino ; sporidiis filiformibus. Ascobolus citrinus, Chev. 

 Fung. 111. Fasc. 1. tab. 31. On rose-twigs lying in a running 

 stream, Pcnllergare near Swansea, M. Moggridge, Esq., April 

 1847. 



Our plant answers exactly in outer appearance to that of 

 Chcvallicr, having a broad flat yellow hymeninm with a pale 

 border. The asci are clavate and contain long filiform sporidia. 

 Wc suspect that these are what M, Chevallier calls asci, consi- 



