Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 181 



Externally closely resembling P. diminuta, Rob., in Desm. Exs. 

 no. 1538, but more shaggy, of a less vinous tint, and with a plane, 

 not concave, hymeniura. The asci are larger, and the sporidia, 

 like those of many Hysteria, filiform, and not merely oblong aa 

 in the P. diminuta. The hairs too in that species are strongly 

 pointed, whereas in the present they are obtuse. 



562. P. corticalis, Pers. Obs. 1. p. 28, et add. p. 112. On bark, 

 Rudloe, Wilts, C. E. Broome. 



563. P. Clavariarum, Desm. Ann. d. Sc. Nat. ser. 3. vol. viii. 

 p. 8. tab. 3. fig. 1. P. nigra, Sow. tab. 307. On decayed Cla- 

 varia, Rudloe, Oct. 1841. 



This species was omitted in the * English Flora ' from want of 

 specimens and sufficient information. It is now inserted with 

 the name given to it by M. Desmazieres. 



564. P. mutabilis, n. s. E macula minuta fusca villosa erum- 

 pens ; primum hemisphserica extus fusca, demum expansa con- 

 cava pallide albida glabrescens ; sporidiis elongatis curvulis. On 

 leaves of Aira caspitosa, Derry Hill, Wilts, Feb. 1850. 



Minute, at fiii'st presenting little brown villous specks, from 

 which the cups burst forth. Cups scattered, brown externally, 

 hemispherical, villous, as they increase in size becoming smooth 

 and changing to a dirty white. Sporidia minute, elongated, 

 somewhat curved, containing two nuclei. Endochrome sometimes 

 retracted to either extremity. 



We have not placed this curious species amongst the Tapesice, 

 as the cups are essentially solitary. When old it bears some re- 

 semblance to pale forms of P. atrata or P. palustris. 



565. P. Chavetice, Libert, no. 26. " Gregaria sessihs, cupulis 

 minutis membranaceis hemisphsericis concavis tomentosis albis 

 basi pilis longis in subiculum instar tel?e aranese intertextis con- 

 coloribus ; disco subtremelloso fusco-nigresceute ; sporidiis gl > 

 bosis.^^ On oak chips, Rockingham Forest. 



This species resembles P. ccesia, but is known at once byt.'ie 

 yellowish or tawny tint which it assumes in drying. 



566. P. Bloxami, n. s. Dense aggregata, mycelio niveo ins'- 

 dens ; cupulis concavis pallide cervinis extus farinaceis, dis< o 

 concolore. On fallen branches, Tw}'cross, Rev. A. Bloxam. 



Very densely crowded so as nearly to conceal the white cottor y 

 mycelium, in which the cups are half immersed. At first globos , 

 white and densely pruinose, acquiring as they expand a pa !e 

 fawn colour and gradually becoming nearly smooth. Disc fawn- 

 coloured. In dry specimens bundles of the cup are collected n 

 .little patches so as to expose the white mycelium between then. 



This species has much resemblance to P. pruinata, Schweip., 

 but the cups are not black. It cannot be confounded with any 

 other species. We have it from South Carolina. 



