78 



Mycoloi/ical BnUctiii Xo. 20 



[To? // 



FIELD STUDY OF MUSHROOMS 



(A.GARICACEAE) 

 USE THE BLANK ON REVERSE SIDE 



Field study is necessary in c-ase t)t' Miislirooius tritli soft 

 fleslnj tcxinrc. " Tbey caimot be prepared for the herljariiim in 

 "auy Vay that will fully retain the characters of the fresh plant. 

 But dried specimens are not useless — prepared with care they 

 servo to interpret the descriptions that are drawn up from the 

 fresh specimens. 



Abundant specimens should be dried quickly by fire-heat in 

 a wire rack placed over a stove or lamp. They should then be 

 stoi-ed in pasteboard boxes — not moistened and pressed flat as is 

 sometimes advised. 



To kill larvae or infestin*!; insects: Put the specimens in a 

 small box with tight-titting lid and with them place a little 

 Carbon Bisulphide (in a small dish, or saturate a wad of cotton); 

 thi.? volatile substance will prove efiectual in an hour or in 

 several hours if specimens are large. The vapor of the Carbcm 

 Bisulphide is ///ry7(?// inflammahle — do not use it at night or near 

 a stove. It is well to keep moth balls in the boxes with the 

 specimens. 



The blank on the reverse side and the ideas above are com- 

 piled for the most part from Prof. liarle's article in Torreya. He 

 also adds the pertinent suggestion that the discriptions l)e sup- 

 plemented by photographs and water-color sketches. 



It is scarcely necessary to add that an ample quantity of 

 complete specimens should be at hand when making out the 

 descriptions; the plants should be du(j up or a portion of the 

 iiKitrix removed^never broken off and leaving the basal part. All 

 stages- in development should be illustrated. Particularly the 

 change of colori* should l)e noted. Gills, for example, as well as 

 spores when innnature may be pure white, but take (m a char- 

 acteristic color with age. It is suggested that Prang's nomen- 

 clature of colors be used. ("The Prang Standard of Color," 

 Poniilar Edition, No. 1. One I)(dlar; Louis Prang, Boston, Mass.) 



For package of these descriptive blanl^s, send five cents to 

 W. A. KELLERnAN, Columbus, Ohio 



