FIG. 152. Psalliota campestris (wild form). To show the existence of paraphyses in 

 a completely exhausted hymenium. The hymenium was examined a few hours 

 after total exhaustion, before which the mushroom had shed spores for six days 

 and six nights. A and B, transverse sections through the living hymenium ; C, a 

 surface view of the same. Preparations mounted in water and drawn with aid of 

 the camera lucida. In A, h is the hymenium composed of paraphyses, p, g, and of 

 the gelatinised remains of basidia, r. The paraphyses g g appear to have been 

 formed by mere extensions of two subhymenial cells. The waste spores w are 

 lying on the hymenium. The subhymenium, composed of about three layers of 

 swollen cells, is shown at s, and part of the trama at t. In B, the structure of the 

 hymenium is similar to that in A except for the fact that the outlines of two short 

 lately collapsed basidia could be definitely made out at 6. The remains of other 

 basidia are shown at r, paraphyses at p, a waste spore at w, and subhymenial 

 cells at 8. In the surface view C, the paraphyses are shown at p, and the gelatinised 

 remains of the exhausted basidia at r. Lying on the hymenium are two fully 

 pigmented and full-sized spores, w, and four unripe, unpigmented spores at u. 

 Magnification 1,040. 



