1 9 20] DO UGLA S—INOC YBE 2 1 9 



PLATE XIX 



Inocybe infelix 



Fig. 21. — Median section of young fruit body, showing organization of 

 stem, pileus, and hymenophore fundaments within blematogen; X34. 



Figs. 22, 23. — Median and tangential sections of slightly older basidiocarp 

 in which gill cavity has appeared; X34. 



Figs. 24, 25. — Median and tangential sections of fruit body in which 

 palisade layer is developing; X34. 



Figs. 26-30. — -Median and tangential sections of fruit body in which gills 

 are beginning to form; X34. 



Figs. 31-34. — Series of sections from older fruit body with developing 

 gills; X34. 



Figs. 35, 36. — Details from figs. 22 and 23 respectively, showing hymeno- 

 phore primordium; X240. 



Fig. 37. — Detail from fig. 25, showing palisade layer; X240. 



Fig. 38. — Detail from fig. 28, showing young gill salients; X240. 



PLATE xx 



Inocybe eutheloides 



Fig. 39. — -Young button in which pileus and stem primordia are outlined 

 within loose blematogen; X34. 



Figs. 40, 41. — Median and tangential sections of older fruit body, showing 

 growth of pileus into blematogen layer and hymenophore primordium; X34- 



Figs. 42-46. — -Median and tangential sections of fruit body in which gills 

 are forming; X34. 



Figs. 47, 48. — Details from figs. 40 and 41 respectively, showing hymeno- 

 phore primordium ; X 1 58. 



Fig. 49. — Section of gills of more mature fruit body, showing developing 

 cystidia; X158. 



Figs. 50-52. — Series of sections from fruit body of figs. 42-46, showing 

 successive stages in formation of gill ridges; X 158. 



PLATE XXI 



Inocybe hystrix 



Fig. 53. — Young button, showing fundamental tissue into which stem 

 primordium is advancing; X34. 



Figs. 54, 55.— Median sections of two fruit bodies in which pileus funda- 

 ment is advancing into blematogen; X34- 



Figs. 56-60. — Series of longitudinal sections, showing development of gill 



salients; X34. 



Figs. 61-64. — Series of sections from slightly older fruit body; X34- 

 Fig. 65.— Median section from nearly mature fruit body in which pileus 



has begun to expand; X34. 



Fig. 66. — High power photograph from fruit body of figs. 56-60; X158. 



