304 OUTLINES OF BRITISH FUNGOLOGY. 



taken not to confound this with stipitate forms of the two 

 foregoing species. 



68. POLYSACCUM, DC. 



Common peridium simple, rigid, bursting irregularly ; in- 

 ternal mass divided into distinct cells, filled with peridiola. 

 Spores mixed with threads. 



1 . P. olivaceiun, Fr. ; peridium roundish, olive, as well as 

 the regular minute peridiola ; stem short, abrupt, almost root- 

 less. — Sow. t. 425 a, b. 



On the ground (not on sandhills) . Extremely rare. High- 

 gate. I have seen no specimen, and am therefore uncertain 

 whether it is really distinct from P. pisocarpium. 



69. CENOCOCCUM, Fr. 



Peridium naked, thick, carbonaceous, indehiscent, at length 

 hollow, with the walls dotted with dust-like spores. 



1. C. geopMlum, Fr.; black; spores of the same colour. — 

 Sow. t. 270. 



In woods, where the soil is peaty. Common. About the 

 size of a vetch. The proper situation of this genus is very 

 doubtful. 



OedeeIO. MYXOaASTBES. 



At first pulpy, at length filled with flocci and dust-like 

 spores. 



70. LYCOGALA, Mich. 

 Peridium composed of a double membrane, papyraceous, 



