374 PROCKKl>TNGS OB^ THE ACADEMY OF [1894. 



Spots amphigenous, small (2-3 mm.), whitish, with a broad, dull- 

 purple border, which is often elongated in the direction of the veins 

 of the leaf for 2-3 cm., with the ends acute, finally more or less con- 

 fluent, the entire leaf becoming brown and dead. Acervuli small, 

 occupying the centre of the spots, or irregularlj'^ scattered over them. 

 Conidia clavate-cylindrical, curved, upper end subtruncate, lower 

 end attenuated and subacute, uniseptate, hyaline, 18-22 x 3-35,".. 



This is not to be confounded with Cylindrospormm veratrinnm 

 Sacc. & Winter, or with Ascochyta veratrina E. & E. 



Pestalozzia zonata E. & E. 



On decaying fruit of Cydonia, Newfield, N. J. , Sept. 1890. 



Acervuli subepidermal, punctiform, black, raising the cuticle into 

 small pustules, scattered on concentrically zoned, decaying spots on 

 the fruit. Conidia fusoid, 4-septate, slightly constricted at the septa, 

 the two end cells conical and hyaline, the apical one crowned with a 

 spreading crest of three hyaline bristles 15-25// long, the two cells 

 next below quite dark, so as to obscure the septum between them, 

 the cell next below these nearly hyaline. Pedicels very short. 



Pestalozzia Polygoni E. & E. 



On living leaves of Polygonum Virginianum Stanton, Del., Aug. 

 1894 (Commons, No. 2,560). 



Spots dull brick-red, very irregular in shape and size, mostly 

 elongated 2-10 x 1-4 mm., definite, but without any colored border. 

 Acervuli punctiform, black, suberumpent, epiphyllous, scattered. 

 Conidia cylindrical or fusoid-cylindrical, pale, 3-4-septate and more 

 or less constricted at the septa (which are often indistinct, 18-22 x 

 4//, end cells rounded, lower one with a short, slender pedicel, upper 

 one bearing a crest of three, spreading bristles 10-15//. long. 



Pestalozzia toxica E. & E. 



On leaves of Rhus Toxicodendron, Nuttallburg, West Va., Aug. 

 1894 (L. W. Nuttall, No. 567, partly). 



Spots and perithecia as in Phyllosfida rhoicola E. & E. Sporules 

 clavate-oblong, 4-septate, 12-15 x 4-5//, 3 intermediate cells pale 

 brown, end cells short, conical, hyaline, the upper cell with a crest 

 of 3, short, spreading hyaline bristles 6-7/' long. Distance between 

 the two extreme cells 12//. Pedicels shorter than the spores. 



Coryneum oupulatum E. & E. 



On dead limbs of Tsuga Canadensis, Nuttallburg, West Va., Dec. 

 1893 (L. W. Nuttall, No. 272). 



