IOWA DISCOMYCETES 103 



Helotium citrinulum seaveri Rehm, Ann. Myc. 4: 67. 1906. 



Apothecia scattered, sessile, at first globose, becoming spread 

 out and patellate in form, disc orbicular; hymenium lemon-yel- 

 low, .5 to 4 mm. in diameter, externally smooth, whitish ; excipu- 

 lum prosenchymatous ; margin undulate, when dry, hymenium 

 orange-yellow ; asci clavate, apex rotundate, 40 to 45 by 5 to Ifi, 

 8-spored; spores fusiform, straight or slightly curved, simple, 

 hyaline, 7 to 10 by 1.5/*, 2-seriate ; paraphyses filiform, hyaline, 1/* 

 in diameter. 



On dead stems of Carex sp., hillsides, Iowa City, Iowa, May, 



1905. 



Two collections of this material were made at Iowa City in 

 localities about two miles apart. The material was collected in 

 quantity sufficient for distribution in exsiccati. In color the 

 plants resemble those of Helotium citrinum but the plants are 

 very different in other characters. The stem is entirely wanting 

 and the discs are spread out so that the hymenium is entirely 

 plane. Compare H. flexuosum Massee. 



GORGONICEPS Karst, Myc. Fenn. 1 : 15. 1871. 



Apothecia sessile or substipitate, obconic or elongated, finally 

 expanded, soft, almost gelatinous, excipulum composed of brown 

 filaments ; asci clavate ; spores crowded together, fasciculate, rod- 

 like, or filiform, hyaline, many-septate or guttulate ; paraphyses 

 filiform. 



At least one species rather common on rotten wood. 



Gorgoniceps iowensis Rehm, Ann. Myc. 4: 338. 1906. 



Plate 26, f. n. 



Apothecia scattered, sessile, subglobose, tapering below into a 

 stem-like base; margin becoming convex and immarginate, whit- 

 ish, externally smooth, slightly greenish or bluish-green, .2 to .5 

 mm. in diameter and high, when dry brownish ; asci clavate, apex 

 rotundate, 80 to 100 by 10 to 12/x, 8-spored ; spores subcylindric- 

 al, a little curved or almost straight, about 7-septate, scarcely 

 constricted,' hyaline, 30 to 33 by 3 to 4^ ; paraphyses filiform, 3/* 

 thick, apices 2.5 to 3^, hyaline. 



On decaying wood, Mt. Pleasant. 



