1894.] NATURAL SCIENCES OF PHILADELPHIA. 369 



hyaliue, uucleate, not visibly septate, 20-40 (mostly 25-35) x 1- 



*S. Violce West, has yellowish-brown perithecia on pale zonate 

 spots with a reddish- brown border. 



Septoria micropuncta E. & E. 



On leaves of Osmorrhiza, Washington, D. C. (1891)? (E. A. 

 Southworth). 



Spots small (I-I2 mm.), subangular, white, with a broad, dark 

 colored border. Sporiiles cylindrical, slightly curved, not septate or 

 visibly nucleate, 18-27 x li-l^a. 



This is very different from S. Osmorrhizce Pk. which has the spots 

 larger, perithecia also larger, subdiscoid and amber colored, and 

 sporules 35-55 x 2-2J//., uniseptate. 



Septoria Megarrhizae E. & E. 



On leaves of Megarrhiza Oregana Benton, Wash., July 14, 



1892 (C. V. Piper, No. 112, partly). 



Spots orbicular, dirty white, with a broad, dark colored border, 

 3-5 mm. diam. Perithecia epiphyllous, light colored, innate-sub- 

 prominent, subastomous, thin, SO-llO/Jt diam. Sporules filiform, 

 nearly straight, hyaline, faintly nucleolate, 40-60x22-3,'/.. 



Phleospora Megarrhizae E. & E. 



Same host and collector as Septoria Megarrhizce. 



Spots greenish at first, the central portion (1-3 mm. diam. ) be- 

 coming dirty white with a faint, dark purple margin. Perithecia 

 epiphyllous, subdiscoid, thin, perforated above, light colored, becom- 

 ing darker, 150// diam. Sporules oblong, obtuse, 1-3-septate, 

 hyaline, sometimes narrowed in the middle, 13-27 x 6-8//. 



Distinguished from Septoria Megarrhizoe,, even without microscopi- 

 cal examination by its much smaller subangular white spots. 

 Phlyctaena IpomoBa E. & E. 



On calyx lobes of Ipomcea pandurata, Nuttallburg, West Va., 

 Dec. 1893 (L. W. Nuttall, No. 250). 



Perithecia scattered, subcuticular, 75-80// diam., covered by the 

 blackened, slightly raised epidermis. Sporules linear, hyaline, 

 curved above, 15-20 x 11//. 

 Hysteromyxa corticola E. •& E. 



On inner surface of old Cottonwood bark, Rockport, Ks., Dec. 



1893 (E. Bartholomew, No. 1,306). 



25 



