366 



Mycologia 



Massaria japonica I. Miyake sp. nov. in Sangyo Shikenjo Hokoku 

 (Technical report of the Imperial Sericultural Experiment 

 Station), Tokyo, Japan, i 5 : 319, pi. 16, figs. 9, 10, ii. T. 5, 

 xii, Dec. 1916. (Japanese.) 



Perithecia gregarious, subepidermal, with ostiola erumpent, 

 elliptical, 400-500 fi across and 250-320 //, high; perithecial walls 

 pseudo-parenchymatous, 70-100 fx thick, black, walls and bottom 

 surrounding inner space consisting of nearly colorless and sub- 

 transparent cells; asci cylindrical, 130-160 X 20-25 fh octospor- 

 ous, paraphysate ; ascospores dark ink-colored, 4-celled, conspicu- 

 ously constricted at the middle septum, occasionally but not dis- 

 tinguishably so at the other septa, containing one large oil globule 

 in each cell, 30-35 ^>< 9-1 1 ^ ; gelatinous envelope none ; paraphyses 

 filiform, about 1 \x thick, abundant, exceeding asci in length. 



On twigs of Morus alba (not common). 



Type localities : Gifu-ken (prefecture) Ena-gun Kashimo-mura, 

 Mar. 1909, K. Hara ; Iwate-ken (pref.) Hanamaki-cho, Apr. 

 1915, I. Miyake. 



Illustrations : 3 black and white lithographic figures showing 

 detailed structure. 



Easily distinguished under the microscope from other related 

 species by having the inner layers of the perithecial walls nearly 

 colorless and sub-transparent. 



Key to the four species of Massaria above describedi 



(A) Ascospores with gelatinous envelope. 



(a) Ascospores 3-5, usually 4-septate M. phorcioides. 



(b) Ascospores 3-septate M.Mori. 



(B) Ascospores without gelatinous envelope. 



(a) Ascospores not constricted at the middle septum M. moricola. 



(b) Ascospores constricted at the middle septum M. japonica. 



Three species of Massaria are already known to be parasitic 

 or saprophytic on Morus alba, but all can be distinguished in some 

 way from these four new species. 



Massaria epileuca B. and C. is characterized by having asco- 



1 For descriptions of M. phorcioides and M. Mori, see the second article 

 of this series. 



In the description of M. Mori, the two following lines were unfortunately 

 omitted in the final printing: 



ing of black pseudo-parenchymatous tissue ; asci cylindric, shortly pedicelled, 

 140-160 x 40-50 ji, octosporous, paraphysate; 



