30 GENERAL CONSIDERATIONS 



0. RAINIERENSIS 



b. HYMENOCEPHALUS 



d. FLAVODISCUS 



e. PICEAE 



Fig. 



10. Hygrophorus cuticle types — a, H. rainierensis: an ixotrichodermium in 

 which the surface hyphae are at first more or less erect, then become elongated 

 and repent; b, H. hymenocephalus: an epithelium, the surface composed of 

 an irregular palisade of inflated cells; c, H. foetens: an epithelium, the surface 

 layer a dense palisade of more or less upright pseudoparenchymatous ele- 

 ments; d, //. flavodiscus: an ixotrichodermium, a thick zone with loosely 

 tangled hyphae inbedded in a glutinous substance; e, H. piceae: an ixotri- 

 chodermium, with loosely tangled, slender hyphae, some free ends extending 

 above the gluten. 



