EEPOKT OF THE STATE BOTANIST 329 



Fig. 3 Vertical section of the cap and upper part of the stem of a n)atnre 

 plant. 

 ' ' 4 Four spores, x 400. 



Pleurotus ostreatus Fr. 

 Oyster Pleurotus. 

 Fig. 5 A cluster of plants growing from decaying wood. 

 " 6 A plant showing the upper surface of the cap. 

 " 7 A plant showing the lower surface of the cap. 

 • ' 8 Vertical section of a plant. 

 ' ' 9 Four spores, x 400. 



PLATE 27. 



Pleurotus sapldus Kalchb. 



Sapid Pleurotus. 



Fig. 1 A cluster of three plants growing from decaying wood. 



2 A cluster of four plants branching from a common base. 



3 A plant of reddish-brown color showing the upper surface of the cap. 



4 A plant showing the lower surface of the cap. 



5 A small pale plant with a lateral stem, the upper surface shown. 



6 Vertical section of a plant. 



7 Vertical section of a cluster of three plants. 



8 Four spores, X 400. 



9 Color of tho spores as seen in a mass on white paper. 



PLATE 28. 



HvaROPHORUS MINIATUS Fr. 



Vermilion Hygrophorus. 

 Fig. 1 A young plant. 

 • ' 2, 3 and 4 Various forms of mature plants. 

 " 5 A cluster of four plants 

 ' ' 6 Vertical section of the cap and upper part of the stem of ii siuhII 



plant. 

 ' ' 7 Vertical section of the cap and upper part of th.« stem of a larger 



plant with a hollow stem. 

 ' ' 8 Four spores, x 400. 



Variety lutescens Peck. 

 Fig. 9 A young plant. 

 " 10 A mature plant. 



Hygrophorus pratensis Fi: 



Meadow HygrophoruK. 

 Fig. 11 A young plant. 

 ' ' 12, 13 and 14 Forms of mature plants. 



' ' 15 and 16 Vertical sections of diir.Tent forms of matur»> plants 

 ' ' 17 Four spores, x 400. 



42 



