86 



Mycologja 



spots of black periphery, which often run together in increasing 

 size, finally causing death of the surrounding area. This gives the 

 leaves a brownish appearance, and when they are severely infested 

 the entire bamboo grove appears badly discolored and seriously 

 injured. Later fruiting bodies make their appearance on the dis- 

 colored area as minute black spots. 



Type localities : Gifu-ken Ena-gun Toyama-mura and Ka- 

 wauye-mura, Apr., 1908; Tokyo Komaba, May, 1909. 



Differs from Mycosphaerella Arundinariae Atk. (Bull. Corn. 

 Univ. 3 1 : 9. 1897) in the absence of brown hyphae around the 

 perithecium, and in the shape and size of the asci and ascospores. 



Phaeosphaeria Bambusae Miyake & Hara sp. nov. in Shoku- 

 butsugaku Zasshi (Bot. Mag.) Tokyo, 24 286 : 340-341, M. 43, 

 xi, Nov., 1910. (Japanese.) 



Foliicolous ; spots appear along the vein, often with indefinite 

 margin, brown or dark-colored, later becoming grayish or fuscous 

 from the middle, finally covering the entire leaf ; perithecia mi- 

 nutely punctiform, scattered or along the veins, immersed, globose 

 or depressed-globose, black, 120-170 x 140-210 fx \ wall rather thin, 

 dark-colored or fuscous, ostiolate at the apex; asci numerous, 

 fascicled, clavate or cylindrical, 65-90 x 18-27 fx, octosporous, 

 aparaphysate ; ascospores distichous or irregular, fusoid or ellip- 

 soid, straight or slightly curved, triseptate, constricted, hyaline and 

 granular when young, dark-colored with age, 25-30 x 10-12 fx. 



Phyllosticta stage usually makes its appearance with the asciger- 

 ous stage on the same diseased spot as it does in the case of 

 Phaeosphaeria Oryzae Miyake. {See Journ. Coll. Agric, Imp. 

 Univ. Tokyo 2 4 : 247. 1910.) The description of this form 

 follows : 



Pycnidia immersed, globose or depressed-globose, ostiolate at 

 the apex, 100-140 x 70-100 /* ; pycnospores ooze from the pycnidial 

 opening when mature, ellipsoid or cylindrical, hyaline, 2-2.5 x 1.1- 



On the living leaves of Arundinaria Simoni and Sasa paniculata. 



Type localities: Tokyo Komaba, July, 1906 (D. Karashima), 

 July, 1910 (I. Miyake & K. Hara) ; Tochigi-ken Nikko, Aug., 

 1910; Gifu-ken Ena-gun Kawauye-mura, Aug., 1910 (on the sec- 

 ond host). 



