Records of Surrey Resupinate Hymenomycetes. 



321 



curved sterigmata, 6/x long. Spores yellow, obovate, one-guttu- 

 late, at first smooth then finely aculeate 6-8 (-10) x 4-5-5/x. 



On a fallen twig, Farnborough, Hampshire, Rev. P. J. Alex- 

 ander and A. A. P. 



We are indebted to M. Bourdot for the identification of this 

 plant. It is certainly not a Sistotrema in habit, but according 

 to M. Bourdot it is very closely ahied to S. sulphureum, a plant 

 which is unknown to Us. The habit of our plant is that of a 

 Kadulum, but it is distinguished from R. mucidum, the other 

 yellow species of Radulum, by the large rough spores. 



Poria farincUa Fr. 



This is distinguished among the white 

 species of Poria by the shallow, angular 

 pores, the very thin substance, and the 

 curved cylindrical spores, 8-9x2-2-5//,. 

 The hyphae are rather straight, 4-5/x in 

 diarrieter, and without clamp-connec- Poria farinella. X550. 

 tions. 



Poria gilvesccus Bres. in Ann. Myc. vi, igo8, p. 40. 



Effused, bleeding, at first white, 

 then flesh-coloured, at length brown- 

 ish, margin tomentose, persistently 

 white, subiculum scarcely evident; 

 tubes 1-4 mm. long, soft, sub-fleshy; 

 hyphae about 3/x in diameter, 

 yellowish. Pores sub-rotund, apex 

 at length fimbriate, often oblique, 

 medium-sized, variable. Spores hya- 

 line cylindric-curved, 4*5-5 x 1-5-2/*. 

 Basidia clavate, 12-16 x 4//. Sub- 

 hymenial hvphae hyaline, 2-5-3-5/x 

 thick. 



Grounds of St George's College, Weybridge, 1918-1920, 

 A. A. P. and Rev. P. J. Alexander, C.J. 



We are again indebted to M. Bourdot for the identification. 

 The plant has appeared for some years on an old beech stump. 

 It resembles P. adiposus in habit, but is at once distinguished 

 by having allantoic! instead of subglobose spores. The hyphae 

 of the pore-walls are frequently encrusted with mineral matter, 

 and encrusted hairs like that illustrated may project from the 

 pore mouths. This is particularly noticeable under damp con- 

 ditions, when the pore-mouths become whitish. 



D 



0^ 



Poria gilvescens. x 850. 



