1893.] NATURAL SCIENCES OF PHILADELPHIA. 455 



of a round disk on the face of the leaf. This line is more pronounced 

 and the spots are rather paler below. Perithecia amphigenous, 

 black, 100-110/7. diam. pierced above, only the apex erumpent. 

 Sporules elliptical, olivaceous, 4-5 x 22-3//. 



Distinguished from Ph. ForsythixB Sacc. by its discoid, smaller 

 spots. It also grows on a different species of Forsyth in. 



On the same leaves there is an Ascochyta with sporules 7-10 x2 2 /> 

 and also Discosia maculicola Ger. 



Phyllosticta confertissima E. & E. 



On leaves oi Ulmusfulva, Louisville, Kansas. Oct. 1893. (Bar- 

 tholomew No. 1186). 



Spots amphigenous, orbicular, 4—6 mm. diam. , definite, of a uni- 

 form dark brick-red color. Perithecia hypophyllous, numerous, 

 minute, 75/'. diam., perforated above, scarcely visible without a lens. 

 Sporules allantoid, hyaline, 3-4 x 1/jl. 



Has the same habit as Phyllosticta (Plioma) Virginiana Ell. and 

 Halst. 

 Phyllosticta moricola E. & E. 



On leaves of young seedlings of Moras rubra, Belvue, Kansas. 

 Oct., 1883. ' (Bartholomew No. 1184). 



Spots amphigenous, large, red- brown at first, then whitening out 

 with a brick-red, shaded margin, irregular in shape 1-2 cm. diam. 

 Perithecia amphigenous, subdiscoid, brown, perforated above, 100— 

 110/'. diam. Sporules oblong or clavate-oblong or su belli ptical, 

 hyaline, 2-nucleate, 5-8x22-3,". 



Ph. mori folia Pass, is on discoid spots and has sporules only 

 3 2 xli/i. 



Phyllosticta orbicula E. & E. 



On leaves of Nasturtium Armoraeia, Londou,Canada. July, 1893. 

 (Dearness No. 2132). 



Spots amphigenous, orbicular, thin, white, 1-1 2," diam. with a 

 narrow, light colored margin on both sides of the leaf. Perithecia 

 mostly epiphyllous, discoid, black, 80-120// diam., erumpent-super- 

 ficial. Sporules oblong-elliptical or ovate, hyaline or subolivaceous, 

 4-6x22-3/'. 



Differs from Ph. anceps Sacc. in its broader, differently shaped, 

 subolivaceous sporules. 



