Cyathus xidulariace^e 481 



Key to the Genera. 



Peridiola several. 



Peridiola attached by a funiculus or cord to the wall of 

 the peridium. 



Peridium of three layers, cup-shaped 119 Cyathus. 



Peridium of two layers, outer thick and felt-like, inner 



thin ; cup-shaped 120 Crucibulum. 



Peridiola not attached by a funiculus to the wall of the 

 peridium. Peridium of a single membrane, 



globose 121 NlDULARIA. 



Peridiolum solitary, ejected from the peridium. Peridium 



globose, subglobose or urceolate, sessile 122 Sph^robolus. 



CXIX. CYATHUS Haller. 

 (From the cup-shape ; Gr. kuathos, a wine cup.) 



Peridium cup-shaped, composed of three distinct, closely connected 

 layers, apex at first closed with a white membrane or epiphragm, 



Fig. 135. — Cyatlms striatits Hoffm. 

 A, group of plants. Natural size. B, section of young and mature plants. X 3. c, peri- 

 diolum ; D, section of ditto. X 10. e, peridiolum with the filiform appendage ^6 of fig. d) uncoiled 

 and drawn out of the funiculus. X 3. f, basidia and spores. X 500. 1, peridium ; 2, epiphragm ; 

 3, peridiola ; 4, funiculus ; 5, hymenial layer, lining peridiolum ; 6, filiform appendage coiled 

 within the funiculus. 



becoming broadly open. Peridiola compressed, umbilicate, attached 

 to inner wall of peridium by an elastic cord or funiculus. (Fig. 135.) 



2 1 



