1894.] NATURAL SCIENCES OF PHiJiADELPHIA. 371 



If, as seems probable, Phyllosticta affinis E. & K. in Am. Nat., Nov. 

 1883, is the same as Ph. Sassafras Cke. in Grev., Sept. 1883, the 

 specific name "Sassafras" will have precedence, and "affine," 

 already preoccupied by Saccardo, will be dropped, and Gl. affine 

 E. & K. will become Gl. Sassafras (Cke.), the fungus being a 

 Gloeosporium and not a Phyllosticta. 



Gloeospormm Sanguinariae E. & E. 



On leaves of Sanguinaria Canadensis, Nuttallburg, West Va., 

 July, 1894 (L. W. Nuttall, No. 555). 



Spots yellow, oblong or irregular, 3-5 mm. diam., situated near 

 tiie apex of the leaf which is more or less uniformly blackened. 

 Acervuli epiphyllous, numerous, innate, yellow and inconspicuous. 

 Conidia oblong, hyaline, continuous, mostly a little curved, 8-15 x 

 3}-5i//. 



Gloeosporium alboferrugineum E. & E. 



On leaves of Acer saccharinum, Peoria, Ills., July, 1894 (F. E. 

 McDonald). 



Spots numerous, small, subangular, partly limited by the veinlets. 

 1-2 mm. diam., deep reddish-brown, whitening out. Acervuli 100- 

 150// diam., hypophyllous, becoming dark. Conidia oblong, hya- 

 line, continuous, 12-14x3-3j,'/. 



Differs from G. saccharinum E. & E. in habit and in its conidia 

 twice as long as in that species. 



GloBOsporium Trillii E. & E. 



On leaves of Trillium sessile, Berkeley, Cala., April 2, 1894 

 (W. C. Blasdale, No. 212). 



Spots amphigenous, scattered, small (1-2 mm.), dirty white, leaf 

 becoming yellowish around them, finally subconfluent causing the 

 leaf to wither and die. 



Acervuli epiphyllous, rather large, yellowish, erumpeut, often 

 only one in the center of the spot. Conidia oblong-cylindrical, 

 slightly curved, 10-15 (mostly 10-12) x 2^-3^//.. 



Gloeosporium serotinum E. & E. 



On leaves of Prunus serotina, Smyrna, Del., June, 1894 (A. Com- 

 mons, No. 2,439). 



Spots suborbicular, 3-10 mm. diam., deep brick-red, definite, 

 soon confluent covering the entire leaf which is then of a deep red- 

 brick color. Acervuli amphigenous, numerous, flesh color. Conidia 

 oblong, straight, obtuse, 12-15x4-5//. 



