Seaver: The Hypocreales of North America 221 



2. Spermoedia microcephala (Wallr.) Seaver, N. Am. Fl. 3: 



55- 1910 



Kentrosporium micro cephalum Wallr. Beitr. Bot. 164. 1844. 

 Sphaeria microcephala Wallr. Beitr. Bot. 164, as syn. 1844. 

 Claviceps microcephala L. Tul. Ann. Sci.Nat. III. 20: 49. 1853. 



Sclerotia not exceeding 5 mm. in length ; apparently differing 

 from the preceding species only in the smaller size of the sclerotia 

 and stromata. 



In the inflorescence of various grasses ; American specimens on 

 Calamagrostis seem to conform with descriptions of this species. 

 Type locality: Europe. 



Distribution : North Dakota ; also in Europe. 

 Illustrations: Wallr. Beitr. Bot. pi. 3, f. 10-16; Ann. Sci. 

 Nat. III. 20: pi. 4, f. 1-11. 



Exsiccati : Brenckle, Fungi Dak. 4. 



3. Spermoedia cinerea (D. Griff.) Seaver, N. Am. Fl. 3: 55. 



1910 



Claviceps cinereum D. Griff. Bull. Torrey Club 28: 240. 1901. 



Sclerotia clavate, gradually tapering upwards, straight, curved, 

 twisted, or contorted, 1.5-3 cm - long and 1.75-2.5 mm. thick at 

 the base, very viscid while developing, the base permanently in- 

 vested by the flowering glumes of the host, dark-gray at the base, 

 gradually fading to very light-gray or almost white at the apex; 

 stromata erect, erumpent; stem cylindric or slightly fusiform, 

 short, stout, almost white ; head slightly flattened below and 

 overlapping the upper end of the stalk, 2-3 mm. in diameter, 

 light-gray, almost smooth, viscid, covered with small, darker 

 points indicating the position of the perithecia ; perithecia im- 

 mersed, ovoid or subovoid, 190-225 X 60-90 mic. ; asci narrowly 

 cylindric, slightly narrowed below into a rather long, stout pedicel 

 and slightly enlarged at the point of attachment, 135-150 X 4~5 

 mic. 



Growing on the inflorescence of species of Hilaria. 

 Type locality: Cochise, Arizona. 

 Distribution : Known only from the type locality. 

 Illustrations : Bull. Torrey Club 28 : 238, /. 1-2. 

 Exsiccati : D. Griff. W. Am. Fungi 97. 



