POLYSACCUM — CYATHUS. 23 



Polysaccum pisocarpium. Fr. (fig. 1, p. 20.) 



Peridium irregularly globose, indistinctly nodulose, 

 passing downwards into a stout stem-like base; peridiola 

 irregularly angular, 4-5 X 2-3 mm., yellow ; spores globose, 

 warted, coffee-colour, 9-13 /x. 



Polysaccum pisocarpium, Mass., Mon. Gast., p. 52, f. 53. 



Polysaccum olivaceum, Berk., Outl. 304; Cke., Hdbk., n. 

 1093. 



Lycoperdon capsuliferum, Sow., Engl. Fung., tab. 425. 



Amongst sand. Peridium olive with brown tinge, 1-3 in. 

 across, stem stout ^-1 in. long. Has not been met with 

 since Sowerby's time. 



FAM, III. 



NIDULARIEAE. 



Spores produced in the interior of one or usually several 

 indehiscent peridiola enclosed in a common peridium. 



Nidularieae, Mass., Mon. Gast., p. 53. 



Nidulariaceae, Tut, Mon. Nid., Ann. Sci. Nat., ser. 3, i. 

 p. 64 (in part). 



The leading idea of the present group is the complete 

 differentiation of the peridiola, which were mistaken by the 

 early mycologists for the reproductive bodies. In Poly- 

 saccum the peridiola are present, but not so completely free, 

 owing to the persistence to some extent of the tramal 

 plates. 



CYATHUS. Haller. (fig. 6, p. 20, and fig. 7, p. 28.) 



Peridium consisting of three layers, apex at first closed by 

 a membrane (epiphragm), becoming broadly open ; peridiola 

 compressed, umbilicate, attached to peridium by an elastic 

 cord (funiculus). 



Cyathus, Haller, Helv. V., p. 127 ; Mass., Mon. Gast, p. 54. 



