BOLBITIUS FLAVIDUS 



69 



placed well on the side of a gill among the basidia. The paraphyses 

 are large sterile elements resembling those of Psathyrelki disseminata, 



A B 



Fig. 3i.—Bolbitius flavidus. Analysis of the hymenium 

 as seen in surface view. A, an area one-tenth of a 

 mm. square in extent, just before the begmnmg of 

 the spore-discharge period. Basidia of various ages, 

 but no two of like age, are close together ; a, older 

 basidia bearing spores ; b, younger basidia which have 

 not yet developed spores ; p, paraphyses. Fourteen 

 of the basidia bear spores and thirty-one are still 

 without any. B, the spores of the fourteen spore- 

 bearing basidia of A set out separately.; the degree 

 of pigmentation of the spores is shown by the amount 

 of shading. C, a piece of hymenium near the end of 

 the spore-discharge period. There are now only six 

 turgid basidia, t, all producing spores but of different 

 ages ; the other basidia, c, have collapsed ; p, 

 paraphyses. D, a piece of hymenium from an ex- 

 hausted gill. All the basidia, c, have now collapsed ; 

 p, paraphyses. E, a piece of hymenium in which 

 only the paraphyses, p, have been sketched. 

 Through the spaces between them were inserted 

 the stalks of the basidia. Magnification, 352. 



Lepiota cepaestipes, and Coprinus. They are welded together into 

 a single system which makes a ground-work through which the 

 narrow shafts of the isolated basidia protrude (Fig. 34, D and E). 

 They constitute the elastic elements of the hymenium and serve to 



