University Bulletin, Series 7, No. 22. 



Botanical Series No. 1 8 



Ohio Mycological "Bulletin No. 5 



W. A. Kellerman, Ph.D., Ohio State University, 



Columbus, Ohio, June 12, 1903. 



Specimens — Many interesting Mushrooms have been brought to 

 our notice and thanks are extended to those who have sent specimens. 

 It must be said, by way of suggestion, that in some cases insufficient 

 care is taken to get complete specimens. They ought never to be broken 

 ofif leaving half the stem, nor even severed at the surface of the soil or 

 substratum on which they grow ; the underground or concealed por- 

 tion should also be carefully secured. This often affords indispensable 

 characters for correct identification, especially so when the presence or 

 absence of a volva is to be determined. For study a large number of 

 specimens are needed ; they should illustrate all the characters that the 

 species shows in its different stages of development of the fruit — fruit 

 I say because the so-called Mushrooms and Toadstools are only the 

 fruiting stage of the plant, the vegetative portion being the (whitish and 

 mostly concealed) mass of threads called my-ce-li-niii. 



Fig. 2:5. Co-iiri'-nus co-ina'-Uis. Sliaggy-niane. Edible. Belongs to the black- 

 spored Gill-fungi. The gills and cap dissolve into an inky fluid at maturity. Various 

 stages shown in the illustration. From photo by Prof. Schaffner. 



Entered as Second Class Matter, Post-office at Columbus, O. 



