CRIER ARIA 165 



to be observed that Fig. 21 represents higher magnification; 

 otherwise the two figures are very much alike. 



New England, New York, Pennsylvania, Maryland and South 

 Ohio, Washington, California. 



6. CRIBRARIA DICTYDIOIDES Cke. and Balf. 



PLATE I., Figs. 5, 5 a, 5 b. 

 iSSi. Cribraria dictydioides, Cke. and Balf., Rav. Fung. Am., 475. 



Sporangia gregarious, of medium size, globose, cernuous, stipi- 

 tate; the stipe long, slender, tapering up wards, dull brown in color; 

 hypothallus none ; the calyculus variable, sometimes well devel- 

 oped, as in C. anrantiaca, sometimes rudimentary or represented 

 only by irregular, node-like ribs; the network delicate, the meshes 

 small, few-sided ; the nodules large, prominent, brown, irregular, 

 with many radiating, free, projecting threads, beside the single 

 continuous filaments which pass from node to node ; spore-mass 

 pale, ochraceous ; spores nearly smooth, colorless, 5-7 /z. 



This seems to be the most common Cribraria in the Missis- 

 sippi Valley. It is generally distinguished by the scant calycu- 

 lus and the beautiful richness of its complex net. The nodules, 

 especially above, emit filaments in all directions, but are, not- 

 withstanding, united by single, impaired threads only, most of 

 the filaments being free at the distal end. The calyculus is 

 often entirely absent, and this would seem to be the typical 

 condition ; but, on the other hand, there may present itself a 

 cup as distinct as in C. aurantiaca. See, for this variation, Bot. 

 Gas., XIX., p. 398. The rather large sporangia, .6 mm., and the 

 especially numerous radiating threads, seem to be the most dis- 

 tinctly diagnostic characters, and these are sufficiently constant 

 to separate this species easily from C. intricata on the one hand 

 and C. tenella on the other. 



Abundant on rotten logs of every sort, especially oak ; com- 

 mon on the lower side of rotting pine planks in wooden walks 

 along the streets. N. A. F., 2095, seems to belong here. 



Pennsylvania, Ohio, North Carolina, Missouri, Illinois, Iowa, 

 Nebraska. 



