142 Transactions British Mycological Society. 



Radulum mucidum Bourd. et Galz., in Bull. Soc. Myc. Fr. XXX, 

 1914, p. 247. 



Hydnum mucidum Pers. sensu Bres., Fung. Hung. Kmet., 

 non H. mucidum Fr. 



Effused, soft, separable, yellow, more or less nodular, teeth 

 short, scattered, awl-shaped, or when growing on an upright 

 surface taking on elongated forms. Basidia clavate, y/x wide, 

 with 4 sterigmata. Spores elliptical to subglobose, with a 

 lateral apiculus, 4-5 x 3-5-4/x, very pale yellow, i-guttulate. 

 Hyphae thin-walled, frequently septate, with clamp-connections, 

 4-7JU, in diameter. 



Inside a hollow stump, extending for some distance over 

 bark and living stems of ivy, St. George's College, Weybridge, 

 Nov. 1918, A. A. P. and Rev. P. Alexander. 



Easily distinguished by the small subglobose spores. As 

 the Weybridge specimen was more distinctly yellow than is 

 indicated in the description given by Bourdot (loc. cit.), material 

 was sent to him for confirmation. He states that he had also 

 received from Mr. Romell a specimen which was said to be 

 "pale sulphur or straw-coloured" when fresh. He had only 

 once seen it fresh himself, and thinks the yellow colour may be 

 fugacious. 



It seems very doubtful whether this is Persoon's Hydnum 

 mucidum, as Bresadola believes. Persoon describes his plant 

 as pure white, and does not mention any variation to yellow. 



Radulum molar e Fr., Elenchus I, 1828, p. 151. Radulum mem- 

 branaccum (Bull.) Bres., Fung. Hung. Kmet. p. 39. 



An irregular form growing on a fallen branch was identified 

 for us by M. Bourdot as a "forme tomenteuse" of this species. 

 In texture, colour and in the large broadly elliptical spores 

 R. molare resembles Corticium confluens, of which it may be 

 a form. The hyphae, however, are slightly larger and more 

 distinct. Bresadola considers this to be the true Hydnum 

 memhranaceum of Bulliard, and not the brown species to which 

 Fries attached the name. 



Merulius pinastri (Fr.) Burt. 



On decaying sticks in the grounds of St. George's College, 

 Weybridge, A. A. P. 



This species was recorded in the Kew Bulletin, No. 7, 1918, 

 p. 230. 



Merulius tremellosus (Schrad.) Fr. 



Solenia poriaeformis Fuck., Symb. Myc, Nachtr. I, 1871, p. 2. 

 Peziza poriaeformis (DC.) Fr., Syst. Myc. II, p. 106. 



