COPRINUS PLTCATILIS 



43 



However, as the spores are shed, it 



sulcations above the gills, 

 becomes much lighter 

 and finally whitish, 

 except at the disc 

 which remains brown. 

 The upper surface 

 of the pileus is made 

 up of palisade cells. 

 These cells in some 

 fruit-bodies are more 

 or less pear-shaped 



and in others oval or Fig. 2().~Maras77iius rotula, one of the aequi- 



even almost snbpripnl hymeniiferous Agaricineae, which vegetates in 



even aimOSt spnerical ^ead twigs, sticks, and roots in woods and hedge- 



(Fig. 27). They are rows. Each pileus has its gills, like those of 



' Coprinus plicatilis, adnate to a collar free from 



firmly attached to tlie stipe. Photographed at Scarborough, Eng- 



,1 1 . 1, land, by A. E. Peck. Natural size. 



one another laterally, 



and thofe is an intercellular space wherever three meet together. 

 The pileus of Cojprinus plicatilis at maturity is smooth, but in 



Fig. 27. — Coprinus plicatilis. Palisade colls on the outer surface of the 

 pileus-flesh (c/. Fig. 24). A, surface view ; fruit-body obtained at 

 Kew, England. B : a, a lateral view of three of the cells shown in 

 A ; b, palisade cells of a fruit-body obtained on a lawn at King's 

 Heath, P^ngland. C : a, a fruit-body, obtained from a field at 

 King's Heath ; b, some palisade cells from the fruit-body a. Hairs 

 are usually absent from the pilei of C. plicntiUs, but a few were found 

 on that of a and one is shown in b. jMagnification : A, B, and C h, 

 293; C (I, natural size. 



some young unexpanded fruit-bodies I once observed a few pilo- 

 cystidia, one of which is shown in Fig. 27, C.^ 



^ The expanded pileus of C. micaceus is devoid of pilocystidia ; but, in this 

 species also, I have observed a few of these hairs in some young unexpanded pilei. 



