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RESEARCHES ON FUNGI 



deep, thin, crowded, beautifully connected by veins, and cinnamon 

 in colour. 



The spores are remarkably small. According to Massee ^ they 

 measure only 3 X 1-5-2 //., according to Miss Johnson ^ 4 X 3 /i, 

 and according to KaufEman ^ 4-5 X 2 fi. The small size of the 



Fig. 159. — Panus stypticus physiological form non-luminescens. A group of fruit- 

 bodies projecting from a stump at Tanworth-in-Arden, Warwickshire, England. 

 Photographed by Jessie S. Bayliss Elliott. Natural size. 



fruit-bodies and the crowding and thinness of the gills are doubt- 

 less correlated in part with the very small size of the spores and of 

 the basidia which bear them. A fruit-body of Panus stypticus both 

 macroscopically and microscopically is, as it were, a miniature of a 

 fruit-body of Pleurotus ulmarius or P. ostreatus. 



The fruit-bodies of Panus stypticus are hot to the taste and have 



1 G. Massee, British Fungus- Flora, vol. ii, 1893, p. 309. 



2 E. M. Johnson, " On the Biology of Panus stypticus,'' Trans. Brit. Myc. Soc, 

 vol. vi, 1920, p. 348. 



3 C. H, Kauffman, The Agaricaceae of Michigan, U.S.A., vol. i, 1918, p. 48. 



