1 62 



RESEARCHES ON FUNGI 



fraction of a single second) they must fall without acceleration at 

 a uniform speed. The size of the spores is also such that this 



uniform speed is only about 0*5-6 mm. per second. The spores, 

 therefore, are so tiny that even the slightest air-currents can 



B 



D 



E F C H 



I J A K L 



M 



N 











R 



• • • • t « 



I 



.1 1 



lO/U. 



ao, 



OIM 



Fig. 55. — The average spores of iudividual fruit-bodies of various species of 

 Hyiuenomycetes. A, Coprinus plicatilis; B, C. and D, three individuals of 

 Arnanitopxix vayinata ; E, Coprinus comatus; F, Russula emetica; G, I'oly- 

 porus squamosus ; H, Galera tenera; I, Aiitanita rubescens ; J, Boletus badius ; 

 K, Marasmius oreades ; L, M, X, and O, four individuals of Psalliota campestris ; 

 P, Paxillus involutus ; Q, Pluteus cerrinus; H, Collybia dryophila. 



carry them long distances aAvay from the fruit-bodies upon which 

 they have been developed. 



