160 FUNGUS-FLOEA. 



Hydnum crinale. Pries. 



SuMculum effused for 1-2 in. ; very thin, texture fibrillose, 

 umber, or with a rusty tinge ; spines very thin and slender, 

 hair-like, crowded, 2 lines long or more, umber with rusty 

 tinge. 



Hydnum crinale. Pries, Epicr., p. 516; Stev., Pung., p. 242. 



On dead wood. Distinguished by the crowded hair-like 

 spines. 



Hydnum variicolor. Pr. 



Subiculum white, forming a furfuraceous, adnate, in- 

 separable crust, spreading for 1-2 inches ; spines very 

 minute, crowded, conical, unequal, brownish, usually more or 

 less closely adpressed to the subiculum ; spores subglobose, 

 3-4 ju, diam. 



Hydnnm variicolpr, Pries, Epicr., p. 516. 



On trunks, especially oak. 



** Spines yellowish or greenish, 



Hydnum aureum. Pries, (fig. 2, p. 149.) 

 Every part golden yellow ; subiculum determinate, circum- 

 ference with radiating tooth-like processes ; subcartilaginous, 

 smooth; spines about 1 line long, awl-shaped, crowded; 

 .spores subglobose, muriculate, 4-5 /a diam. 



Hydnum aureum, Pr., Elench., p. 137 ; Stev., Pungi, p. 243. 

 On dead branches. Mycelium penetrating the wood, and 

 forming a yellowish circumscribing zone. 



Hydnum dentioulatum. Pers. 



Subiculum longitudinally effused, often for several inches, 

 rather mealy, bright yellow ; spines same colour, crowded, 

 slightly toothed here and there. 



Hydnum denticulatum, Pers., Myc. Eur., p. 181 ; Stev., Brit. 

 Pung., p. 243. 



On rotten wood. 



Hydnum alutaceum. Pr. 

 Subiculum longitudinalLy effused for several inches, 

 crustqse, inseparable, margin naked, pale ochraoeous ; spines 

 similarly coloured, minute, crowded, unequal, acute. 



