!)7 



A RE-DESCRIPTION OF TRICHOLOMA PRAE- 

 MAGNUM, A FAIRY RING MUSHROOM 



By L. O. Ovkriioi.ts 



While collecting fleshy fungi in the vicinity of the mcjiinlain 

 laboratory of the University of Colorado (located at Tolland, 

 Colorado) in 1912, Dr. Francis Ramaley called the writer's at- 

 tention to a fairy-ring mushroom* that at certain seasons of the 

 year is quite abundant in that vicinity and at other nearby places. 

 The fungus was later identified as Tricholoma praema^num 



Fig. 3. Young specimen of Tricholoma praemagnuin. 



Murrill. Specimens of one collection were sent to -Dr. Murrill 

 for comparison with the types and he verified the determination. 

 However, certain discrepancies apparently exist in the original 

 description! and the species is here redescribed from abundant 

 field notes and observations made in 19 12 and 19 13. The lo- 



* See Ramale}-, Francis. Mushroom fairj" rings of Tricholoma praemagnum (in 

 this issue of Torreya). 



t North American Flora, lo: i, 12. 1914. 



