330 NEW YOKK 8TA.TE MUSEUM 



Paxillus involutus Fr. 



Involute Paxillus. 

 Fig. 18 A young plant. ^^ 



' ' 19 An immature plant showing the invohite margin of the cap. % 



' ' 20 A mature plant showing spots on the stem and gills where they have 



been bruised. 

 " 21 A plant with an eccentric stem. J 



' ' 22 Vertical section through the center of a plant. il 



' ' 23 Four spores, x 400. 



PLATE 29. 



Lactarius deliciosus Fr. 



Delicious Lactarius. 

 Fig. 1 A young plant. 



' ' 2 A plant with the cap partly expanded. 



' ' 3 A plant with the cap full}' expanded and somewhat funnel-shaped, 



the gills wounded at 3a. 

 ' ' 4 An old plant faded and tinged with green. 

 ' ' 5 Part of a vertical section through the center of the cap and upper 



part of the stem of a mature plant, showing the orange-colored 



juice oozing from a wound in the gill at 5a. 



' ' 6 Four spores, x 400. 



PLATE 30. 



Lactarius volemus Fi: 



Oravge Lactarius. 

 Fig. 1 A young plant. 



' ' 2 A plant having a small umbo in the center of the cap. 



" 3 A plant with a broadly convex cap. 



" 4 A plant with the cap somewhat funnel-shaped. 



' ' 5 A large plant with the cap broadly funnel-shaped, and the gills 



wounded, discolored and dripping the white milk at 5a. 

 ' ' 6 A plant with the margin of the cap corrugated or wrinkled on its 



surface. 

 ' ' 7 Vertical section of the cap and upper part of the stem of a small 



plant, a drop of the white juice issuing from a wound in the gill 



at ?». 



' ' 8 Four spores, x 400. 



PLATE 31. 



RUSSULA VIRESCENS Fr. 



Greenish Russula. 

 Fig. 1 A young plant. 



2 A plant with the cap partly expanded. 



3 and 4 Two plants with the caps slightly striate on the margin, one 

 mature and the cap fully expanded. 



5 A mature plant with the cap fully expanded, split in two places on 

 the margin and yellowish-green in the center, 



6 Vertical section of the cap and upper part of the stem of a plant 

 whose cap is convex. 



7 Vertical section of the cap and upper part of the stem of a plant 

 whose cap is centrally depressed. 



8 Four spores, x 400. 



4 



