9 6 



RESEARCHES ON FUNGI 



of which I described the geotropic swinging in Volume I, which 

 I was unable to identify and therefore for convenience called 

 C. plicatiloides (Vol. I, Figs. 26 and 27, pp. 70 and 72), is certainly 



FIG. 32. Coprinus curtus (= C. plicatiloides of Vol. I). Fruit-bodies on un- 

 sterilised horse dung in a large glass chamber in the laboratory at Winnipeg, 

 at about 11 A.M. All (except one central very rudimentary one showing 

 a speckled pileus only) belong to a single daily crop and all will have shed 

 their spores and have begun to collapse by about 2 P.M. The largest pileus 

 shows the characteristic reddish scales on its upper surface. As each pileus 

 flattens out, its narrow disc becomes depressed like that of Coprinus plicatilis. 

 Natural size. 



C. curtus. 1 Coprinus curtus has a pileus which is foxy-red when 

 very young and which, when expanded, bears a certain number of 

 small scales which are composed of spherical cells and vary 

 from a deep red colour to a watery white. Its spores are oval 



* 



1 I have described Coprinus curtus minutely in " Three New British Coprini," 

 Trans. Brit. Myc. Soc., vol. vi, Part IV, 1920, pp. 364-365, and again in Volume III 

 of this work. 



