Pound and Clements: north American hyphomycetes. 729 



COREMICM BICOLOR (WEH.) 



Embolus hicolor Web. Prim. Flor. Hols. 1760. 



Ixaria stemonitis Pers. Com. Fung:. Clav. 111. 1797. 



Cephalotrichum stemtmitis (Pehs.) Nees. Syst. 87. 1816. 



Styxanus stemonitis (Pers.) Corda Icon. Fung. 1 : 112. PI. 4. f. 283. 1837. 



COREMIIJM MONILIOIDES (A. & S.) 



I8aria moniltoidee A. & S. Consp. Fung. Lusat. 362. PI. 12. f. 8. 1805. 



Cephalotrichum monilioides Lk. Sp. PI. SS: 112. 1825. 



Sty8anu8 monilioides (A. & S.) Corda Icon. Fung. 2: 17. PI. 11. f. 72. 1838. 



11. TRICHURUS Clements & Shear. Rep. Bot. Surv. 



Nebr. 4:7. 1896. 



Stipe and sporophore as in Coremium, but the capitulum 

 densely beset with long, strict spines. 



Contains but a single species, found in this country. 



12. GRAPHIOTHECIUM Fuckel. Symb. Myc. 366. 1869. 

 Stipe erect, cylindrical, capitate clavate above, perithecioid 



at the base; hyphae parallel, fasciculate; conidia simple, hyal- 

 ine, ovoid. 



Represented in the United States by two species only. 



13. HEYDENIA Fres. Beitr. Myk. 47. 1852. 



Stipe elongate cylindrical, rigid, fuscous, pseudoprosen- 

 chymatous in texture, dilated above into an irregular disk, 

 from which arises the subglobose capitulum; sporophores non- 

 ramose, septate; conidia globose, pleurogenous. 



Represented in this country by a single species. 



Subfamily Isarieae Brogn. Essai Champ. 1825. 

 Conidiophores lateral, i. e., short branches, or sterigmata 

 borne laterally upon the stroma, in some cases apices of the 

 fertile hyphae, but then emerging all along the stroma; capit- 

 ulum linear, cylindrical, or clavate, scarcely distinct from the 

 stipe. 



14. ISARIA Pers. Tent. Disp. Meth. 41. 1797. 



Stipe erect, rarely branched, everywhere sporophorous 

 above, sterigmata usually formed by the tips of the fertile 

 hyphae; capitulum indefinite, or lacking; conidia globose, or 

 ellipsoid, simple, hyaline. 



Thirty-one species, mostly conidial stages of Cordyceps, oc- 

 cur in the United States. 



