Mycological Bulletin 



No. 73 



LlBRARV 



W. A. Kcllerman, Ph. D., Ohio State University YORK 

 Columbus, January, 1907. ROTANICAL 

 • GARDEN. 



FOR THE NEW YEAR. 



We give first place to an enthusiast who is not unknown to 

 the readers of the Bulletin. Superintendent Hard not only fur- 

 nishes the text, but also the illustrations which were made under 

 his supervision. It is a brief treatment of the large and in- 

 teresting genus Tricholoma, but more space at present could not 

 be placed at the disposal of the author. Half-tones of some of 

 the other species will be given later. 



It is hoped too that another characteristic photograph may 

 be furnished during the year of Volvaria bombycina- An 

 illustration is needed of the too perishable plant when it reaches 

 the climax of its glory. 



The Frontispiece. — There are many eminent French mycol- 

 ogists — in fact, I doubt whether any other country than France 

 can furnish so long and honorable list of scientific men who 

 have paid attention to Mushrooms. The first representative 

 which we select is M. le Professeur Dr. N. Patouillard. 



THE GENUS TRICHOLOMA AND SOME OF THE OHIO SPECIES. 

 Supt. M. E. Hard. 



The generic name Tricholoma, comes from two Greek words mean- 

 ing hair and fringe. 



In this genus the veil is absent or. if present, it is floccose and adheres 



to the margin of the pileiis. The volva and ring are both wanting. The 



pileus is generally symmetrical and is never tmibilicate and rarely um- 



bonate. The gills are attached to the stem and are more or less strongly 



notched or sinuate at the stem. The stem is fleshy-fibrous, rather short 



and stout, without a bark-like skin as in the Collybia. It is homogeneous 



P^ and confluent with the cap. The gills are white or dingy and frequently 



^^ spotted. The caps may be smooth, scaly, dry. moist or water soaked. 



' — The distinguishing feature of the Tricholoma is the sinuate gills. 



ly^ There are a number of species of the Tricholomas. I have found thirty-one 



Q^ species about Chillicothe. Of these but one. according to my experience. 



is not edible. Tricholoma svlhhiircvm. The plants occur from May to 



2! freezing weather. A few of the species are here described and illustrated, 



<c 



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