HYDNUM. 165 



Distinguished by the beautiful white colour when grow- 

 ing, becoming pallid when dry. Subiculum thin ; 2-3 

 inches or more across, spines minute, subacute, glabrous. 

 Persistent. (Fries.) 



Hydnum farinaceum. Pers. 



White; subiculum effused, indeterminate, forming thin, 

 mealy, crustose patches ; spines thin, rather distant, very 

 acute, quite entire. 



Hydnum farinaceum, Pers., Syn., p. 562 ; Stev., Fung., 

 p. 246. 



On rotten wood, especially pine. Forming thin effused 

 patches resembling scattered meal, beset with distant acute 

 spines. Sometimes yellowish. 



A form, evidently of this species, with a most beautifully 

 branched byssoid margin, spreading several inches on fallen 

 decayed branches. Subiculum effused, consisting of a very 

 delicate inseparable byssoid membrane, closely applied to 

 the wood and following all its irregularities, the margin 

 most beautifully radiated and barren; the fertile parts 

 sprinkled with a thin farinaceous stratum, from which 

 spring acute white teeth, which are sometimes nearly 

 straight. (Berk.) 



Hydnum argutum. Fr. 



"White, subiculum effused, vague, in scattered patches, 

 consisting of loosely interwoven hyphae ; spines awl-shaped, 

 acute, unequal, minutely toothed ; spores subglobose, 7-8 /* 

 diam. 



Hydnum argutum, Fries, Syst. Myc. i. p. 424 ; Stev., Fung., 

 p. 246. 



On wood and bark. Distinguished by the loose texture of 

 the subiculum, thus approaching Caldesiella. 



Hydnum stipatum. Fr. 



Whitish. Often very broadly effused, very thin, minutely 

 pulverulent, forming an inseparable crust ; spines crowded, 

 blunt, granule-like, minutely toothed. 



Hydnum stipatum, Fries, Syst. Myc., p. 425; Stev., Brit. 

 Fung., p. 246. 



On rotten wood. Often forming very broadly effused 



