REPORT OF THE STATE P.OTAXIST I915 4I 



On dead branchlets of C o r n u s f 1 o r i d a L. Yonkers, N. Y. 

 H. D. House, May 8, 191 5. Type in the herbarium of the New 

 York State Museum. 



Sphaeropsis viburni-dentati Dearness & House, sp. nov. 



Pycnidia gregarious in the cortex, globose, 160-300 fx, raising 

 the covering cuticle which is minutely pierced by the short 

 black ostiola; conidia pale brown, oblong with rounded ends, 

 i8x 7 //. to 22 X 6y2 fjL, on basidia which are one-half to two-thirds 

 of the length of the spores. 



On dead stems of , V i b u r n u m d e n t a t u m Linn. Albany, 

 N. Y. Collected by H. D. House, ]\Iay-Tune, 191 5. Type in the 

 herbarium of the New York State ^luseum. 



Differs from Sphaeropsis lantanae P. Brun., Avhich 

 has smaller dark-brown spores in erumpent, black perithecia, and 

 from Sphaeropsis viburni Ell. & Dearness, which has 

 larger, dark-brown, subpyriform spores and is phyllogenous. 



Stagonospora convolvuli Dearness & House, sp. nov. 



Spots reddish brown, irregular, .5 to i cm broad, deciduous, not 

 bordered but faintly concentrically ridged on the upper side. 

 Pycnidia mostly epiphyllous, black around the perforate mouth, 

 80-125 /JL in diameter, obscure or imperfect beneath. Sporules 

 hyaline, fusoid, subacute at one end, rounded at the other^ nucleate, 

 faintly 2-3 septate, 15-18x3-4 fx. 



On living leaves of Convolvulus s e p i u m L. Roadside 

 north of Liverpool, Onondaga county. PL D. House, August 12, 

 191 5. Type in the herbarium of the New York State Museum. 



It was thought at first that this might be a variety of Septoria 

 calystegiae West., but that has smaller spots and fihform con- 

 idia 30-40 X 4-5 fx. The difference between Septoria and Stagono- 

 spora is mainly that of " filiform '" and "' fusoid '' as applied to the 

 shape of the conidia. The specimens here considered belong clearly 

 to the later type and hence to the genus Stagono-spora. In 

 Septoria calystegiae the pycnidia are mostly hypophyllous. 



Vermicularia polygoni-virginici Schw. 

 On dead stems of Polygonum m u h 1 e n b e r g i i ( Meisn.) 

 S. Wats. Sylvan Beach, Oneida county. H. D. House, ^fay 13, 

 1915- 



