PLATE 52 



Pig. 1. Form of sporophores growing upon an under surface, a, side view 

 of fruit bodies in position, b, the hymenium of a typical fruit body viewed 

 from below, showing the gill plates radiating outward from a region near the 

 center of the hymenium. % natural size. 



Pig. 2. Form of fruit bodies growing upon a vertical surface, a, three 

 sporophores in position. 6, arrangement of the lamellar plates in a sporophore 

 grown upon a vertical substratum. % natural size. 



Fig. 3. Form of fruit bodies growing on an upper surface, a, position 

 assumed by sporophores upon the upper surface of a limb, h, typical arrange- 

 ment of the lamellar plates. % natural size. 



Figs. 4-15. Views of young actively growing fruit bodies from the under 

 side to show the origin and placement of the lamellar plates or ridges. All 5 

 diameters. Fig. 4, a sporophore with a smooth hymenium primordium just prior 

 to the formation of lamellar ridges. Fig. 5, a fruit body with a single lamellar 

 ridge. Fig. 6, a single lamellar ridge with the sides so far separated by sterile 

 hyphae as to become merely edges of the hymenium primordium. Fig. 7, a 

 specimen with four newly formed lamellar ridges. Figs. 8-14, six sporophores 

 with some isolated ridges and some extending to the edge of the pileus. Fig. 15, 

 a lateral sporophore with the lamellar ridges widening into sterile areas towards 

 the base. 



Fig. 16. Sporophore of Cyphella Urbani. 3 diameters. (After Engler and 

 Prantl.) 



Figs. 17-18. Eegeneration in position, a, a small sporophore shovvang with 

 a broken line where the hymenophore was removed, b, face view of the hymeno- 

 phore removed. 18c, side view of the sporophore after seven days, d, face view 

 of the same, showing five small sporophores formed upon the cut end of the old 

 stipe. All 1% diameters. 



Fig. 19. Eegeneration inverted, c, a small fruit body showing where the 

 end was cut away, d, a median section of the same thirty days later. Only one 

 pair of lamellar plates was formed. 1% diameters. 



Fig. 20. Eegeneration inverted, c, a small sporophore showing where the 

 end was removed, d, the same a week after the apex had been cut away, show- 

 ing three very small sporophores formed upon the cut end of the inverted stipe. 

 These developed no further. 1% diameters. 



Fig. 21. A transverse section through a sporophore when in a dry state, 

 showing the revolute lamellar plates, and their arrangement. 5 diameters. 



Pig. 22. A transverse section through the same sporophore represented in 

 fig. 21, but drawn while the sporophore was in a moist condition. 5 diameters. 



[480] 



