HYDXUM. 161 



Hydnum ahitaceum, Fries, Syst. Myc. i. p. 417 ; Stev., 

 Fung., p. 243. 



On dead wood. Resembling Grandinia granulosa in 

 colour and general appearance, but quite distinct in the acute 

 spines. 



Hydnum sordidum. Weinm. 



Subiculum effused, often for many inches, thin, readily 

 separating from the matrix, subgelatinous, dingy yellow, 

 margin irregularly porous, sulphur-yellow; spines very 

 much crowded, often fasciculate, compressed, incised, sub- 

 acute, 1-1^ lines long. 



Hydnum sordidum, Weinmann, Eossic., p. 70 ; Stev., Fung., 

 p. 243. 



On rotten wood. 



Hydnum viride. Fr. 



Subiculum broadly effused, softly tomentose, green, becom- 

 ing yellowish with age ; spines straight, about 1 line long, 

 rather thick, irregular, more or less toothed, green. 



Hydnum viride, Fries, Syst. Myc. i. p. 421; Sacc., Syll., 

 vi. n. 6794. 



On rotten wood. Often extending in patches 8-10 in. 

 long. 



Hydnum limoni color. B. & Br. 



Adnate, bright citron-yellow; spines crowded, acute, 

 short ; mycelium white, scanty or almost obsolete. 



Hydnum limonicolor, B. & Br., Ann. Nat. Hist., n. 1686; 

 Stev., Brit. Fung., p. 244. 



On a stone buried amongst pine leaves. Distinguished 

 from its nearest ally, Hydnum sepultum, in the exceedingly 

 scanty subiculum and the absence of a persistent, white, 

 barren margin. 



Hydnum spathulatum. Fr. 



Subiculum yellowish - white, effused, membranaceous, 

 separable, circumference fimbriated, under surface villous ; 

 spines spathulate, oblique, orange ; spores colourless, broadly 

 elliptical, apiculate, 8 x 5 p.. 



Hydnum spathulatum, Fries, Hym. Eur., p. 614; Stev., 

 Brit. Fung., p. 244. 



VOL. I. M 



