/ Pound and Clements : north American hyphomycetes. 733 



Sphaerosporium Schw. Syn. FuBg. Am. Bor. 303, is not very- 

 well characterized. It has plane, pulvinate sporodochia 

 covered with a stratum of ochraceo rufous, rather large, 

 globose conidia. But one species is described. 



Spacelia Lev. is composed of conidial stages of Claviceps 

 and Epichloe, and the only species found in our limit are 

 sufficiently known in their maturer stages. 



3. HYMENELLA Fr. Syst. Myc. 2: 233. 1823. 



llijmenula Fr. Elench. Fung. 2: 37. 1828. 

 Hy menopsis Sacc. Syll. Fung. 4:744. 1886. 



Sporodochia disciform, scutellate-disciform, or sub-convex, 

 bright colored or black; conidiophores simple or subsimple; 

 conidia ovoid or oblong, acrogenous, continuous. 



Eleven species are reported from North America. The 

 species placed in the section Hymenobactron under Hy menopsis 

 by Saccardo, having bacillar conidia, may well be sepa- 

 rated. But it does not seem necessary to retain Hymenopsis, 

 which is based solely on the dark color of the conidiophores 

 and conidia. 



4. THECOSPORA Harkn. Bull. Cal Acad. Sci. 1: 41. 1884 

 Sporodochia white or yellowish, globulose, indurate; conidio 



phores slender, sub simple or branched; conidia borne here 

 and there on the conidiophores, involved in a hyaline mucous 

 layer, continuous. 

 Two species are described. 



5. ST1GMATELLA B. & C. Grev. 3:97. 1875; Berk. Outl. 



Crypt. Bot. 313. 1857. (Figure and name only.) 

 Sphaerocrea Sacc. & Ell. Mich. 2:582. 1882. 

 Sporodochia globose, composed of compacted, fasciculate, 

 continuous simple or furcate conidiophores; conidia large, 

 globose ellipsoid, continuous, adhering to the conidiophore by 

 a more or less persistent projection. 

 Two species are described. 



6. EPID0CHIU3I Fr. Summ. Veg. Scand. 471. 1849. 

 Sporodochia waxy or gelatinous becoming fleshy, sub glo- 

 bose or verruciform, or discoid, often tremelloid, black, olivace- 

 ous, or pallid; conidiophores filiform, equal, simple or branched; 

 conidia oblong, ellipsoid, or sub-falcate, continuous. 



