26 GENERAL CONSIDERATIONS 



<J_ CAESPITOSUS 



MICROSPORUS 



Fig. 8. Hygrophorus cuticle types — a, H. cremicolor: the cuticle of the tricho- 

 dermium type; most hyphae loosely arranged radially; b, H. atro-olivaceiis: 

 a trichodermium; the hyphal elements in fascicles, forming squamules; c, H. 

 peckianus: a trichodermium composed of fuscous hyphae, the end-cells of 

 which are pyriform, clavate, ovoid, or subglobose; this structure approaches an 

 hymeniform cuticle; d, H. earlei: a trichodermium in which the surface hyphae 

 arc repent, or more rarely erect; e, H. miniatus var. miniatus: a trichodermium 

 in which the hyphae at first repent, but become more or less erect, septate, 

 and often constricted; f, //. inocyhiformis: a trichodermium, the hyphae 

 smoky-tinted, and clustered to form squamules; g, H. caespitosus: a tricho- 

 dermium, turf-like, the hyphae at times more or less repent, but more often 

 erect, the terminal elements variable in shape; h, H. microsporus: a tricho- 

 dermium, composed of irregular, septate, fuscous, constricted hyphae, the 

 terminal elements cystidioid. 



