Cribraria. 65 



Cribraria dictydioides, Cke. and Balf. 



Sporangia globose, stipitate, dingy ochraceous, calyculus 

 absent ; permanent ribs broad and flattened below, anastomosing 

 laterally, filled with granules, passing upwards into numerous 

 elongated or irregularly angular, prominently convex, coloured 

 nodes containing granules, and connected at various points by 

 very thin, colourless threads; stem elongated, slightly thinner 

 upwards, straight or flexuous, from dirty ochraceous to brown; 

 spores globose, almost colourless, minutely verrucose, 5 7 /* 

 diameter. 



Cribraria dictydioides, Cke. and Balf., Rav. Fung. Amer., 

 475. 



(Type in Herb. Kew.) 



On wood. Aiken, S. Carolina, and Philadelphia, U. S. 



Gregarious, about 3 mm. high. The permanent portion of 

 the sporangium closely resembles that of C. argillacea, but in 

 the latter the spores are warted and the sporangium sessile. 

 The present species also agrees with C. microcarpa in the 

 absence of a calyculus, but in the last-named species every 

 part of the permanent portion consists of irregularly stellate 

 nodes connected by thin bands, and the spores are warted. 

 In G. dictydioides, the nodes of the upper portion of the net- 

 work are convex and very prominent. The stern is sometimes 

 branched, or composed of two or three stems more or less 

 completely blended together. 



Cribraria argillacea, Pers. (f. 105 107). 



Sporangia crowded or scattered, shortly stipitate or sessile, 

 subglobose or broadly pyriform, thin portions of sporangium 

 very pwsisl&nt, dirty ochraceous, shining, calyculus absent ; 

 thickened portions of sporangium in the form of long, more 

 or less parallel, laterally connected ribs, passing upwards into 

 an irregular network with irregular nodes containing granules ; 

 the internodes have frequently a central, swollen, fusiform, 

 granular portion; mass of spores dingy ochre; spores globose, 

 minutely warted, 5 7 p diameter. 



F 



