HYDNUM. 159 



Hydnum squalinum, Fries, S. Myc. i. p. 420 ; Stev., Fung., 

 p. 241. 



On trunks. Not collected during recent years ; admitted 

 on the authority of the figures of Bay and Bolton. 



Hydnum membranaceuin. Bull. 

 -SuMculum thin, smooth, closely adnate, effused for 1-2 

 inches ; spines awl-shaped, crowded, equal, about 1 line long,- 

 acute, and like the subiculum, ta-vmy ferruginous. 



Hydnum memhranaceuni, Bull., t. 481 ; Stev., Fung., p. 242. 



On fallen branches. Sometimes paler and yellowish, spines- 

 often arranged in little groups, pale then brown. 



A glandular appearance on the upper part of the spines is 

 figured by BuUiard and Sowerby. The specimen represented 

 by Sowerby is cracked into little areolae, each of which bears 

 a fascicle of spines. (Berk.) 



Hydnum moUuscum. Fries. 



Subiculum membranaceous, dry, readily separable from th& 

 matrix, whitish ; teeth short, slender, reddish. 



Hydnum molluscum, Fries, Summa Veg. Scand., p. 327" 

 (note). 



Hydnum membranaceum, Berk., Exs., n. 142. 



On wood. Distinguished from H. membranaceum by readily 

 separating from the matrix, and by the white subiculum. 



Hydnum Weinmanni. Fr. 



Subiculum thin, closely adnate, smooth, buff, with a grey 

 tinge ; spines rather distant, minute, acute, equal, not 1 line- 

 long, coloured like the subiculum. 



Hydnum Weinmanni, Fries, Ele-ch., p. 136; Stev., Fung., 

 p. 242. 



On faiUen branches and rotten wood. Effused for 1-2' 

 inches, grey when dry. Most general on poplar branches,, 

 according to Fries. 



Allied to Hydnum membranaceum ; very broadly effused, 

 not cracked; excepting the spines, quite even, very smooth, 

 as is also the margin ; not truly innate with the matrix, but 

 appearing as if adglutinated. With the habit of a young 

 specimen of Thelepliora Uvida. Spines not crowded, short,, 

 bnt acute, slender, all equal, and up to the present I have 

 always seen them straight. Colour peculiar, sordid. (Fries.)' 



