Agaricus campestris (MEADOW-MUSHROOM) 1 



A. Classification: 

 Division I. Thallophyta. 



Subdivision B. Fungi. 



Class V. Basidiomycetes. . ." 



Series. Eubasidiomycetes (true or typical Basi- 

 diomycetes) . 



Sub-class. Hymenomycetes. 

 Order. Agaricales. 

 Family. Agaricaceae. 

 Genus. Agaricus. 

 Species, campestris. 



B. Habitat: 



i. From your own observation, and from the class 

 discussion and assigned readings, describe the 

 habitat of this plant. 



C. Naked-eye Characters: 



1. Form. Describe the form of your specimen. If 

 specimens of different ages are available, compare 

 their forms and describe any variations in specimens 

 of various ages. Is the form of the mature speci- 

 men constant? Is its size constant? 



2. Color. Describe accurately, noting especially any 

 variations in color. 



3. Structure. Note the differentiation of the plant- 

 body (thallus) into an expanded portion (pileus), 



1 The outline for the study of a fleshy fungus has been prepared with 

 special reference to the meadow mushroom (Agaricus campestris). It is 

 general enough, however, with the exception of the outline of classifica- 

 tion, to apply to any gill-bearing form. Indicate in your notes the exact 

 genus and species given you for study. 



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