274 NATURAL HISTORY BULLETIN. 



and on horse dung in the late fall. In some cases they grow 

 crowded together so as to entirely cover the substratum. The 

 paraphyses are filled with granules which are often orange 

 colored but seem to vary u- der different conditions. The 

 paraphyses are simple or branched. In some specimens grown 

 in the laboratory, they are branched many times but in other 

 respects the material seems to be the same as that described 

 by Saccardo as Lasiobolus equinus. 



Lasiobolus raripilus {Phil I.) Sacc. 

 Plate XII, fig. n. 



1878 Ascobolus raripilus Phillips, Grew VII, p. 23. 



1889 Lasiobolus raripilus Saccardo, Sylloge Fung., VIII, p. 537. 



1897 Lasiobolus raripilus Engler-Prantl, I, i, p. 189. 



Gregarious or crowded, minute, sessile, glabrous, at first 

 globose then expanded, i to 3 mm. in diameter, disc convex, 

 pale, lemon yellow, very scantily clothed externally, with a 

 few, pale, septate, straight hairs; asci broadly clavate; sporidia 

 8 elliptical or ovate 30 by 10 microns; paraphyses simple, 

 clavate at the apices. 



Habitat — On cow dung and the surrounding soil in ravine, 

 Iowa City. 



This species seems to agree with the description given by 

 Phillips in Grevillea. The plants grow crowded together in 

 dense pale yellow masses sometimes covering a considerable 

 area in a wet place in a ravine near Iowa City. It is very 

 scantily clothed with hairs, several specimens having been 

 examined before any of the hairs were seen. The hairs differ 

 from those of Lasiobolus equinus by being much more slender 

 and septate. 



Genus II— A SCOP II ANUS Boudier. 



Receptacle at first closed, then expanded, fleshy or fleshy- 

 gelatinous, externally smooth, hymenium at maturity plane 

 or convex. Asci cylindrical or clavate, operculate, 8-spored, 

 protruding beyond the surface of the hymenium. Spores 



