92 



Mycologia 



1-1.2 mm., with punctiform ostiola, perforate; asci cylindric or 

 clavate, rounded above, long-pedicellate below, 1 10-140 X 10- 

 I2(i, octosporous, paraphysate; ascospores monostichous, ovoid, 

 ellipsoid, or indefinitely fusoid, blunt, continuous, 1-2 nucleate, 

 dark-colored, 7-10X4-5/^; paraphyses filiform, simple, longer 

 than asci, 1-1.5/x across. 



On trunks of Morus alba. 



Type locality: Mino (Gifu-ken prefecture), Kawakami-mura, 

 April, 1913, K. Hara. 



Differs from Ustulina microspora in the shape and dimensions 

 of ascospores. 



Valsa Paulowniae Miyabe et Hemmi. 



Besides the description in Japanese translated in Mycologia 

 for May, 1917, two other descriptions of the fungus have been 

 published by one of the authors, Dr. Hemmi. All three descrip- 

 tions are marked " n. sp." The first article to be published with 

 the original description of the fungus (in English) appeared in 

 Sapporo Hakubutsu Gakukwai Kwaiho (Transactions of the 

 Sapporo Natural History Society), 6 2 : 133-158, text-figs. 1-4, 

 issued July 31, 1916. This article gives a full account in Japanese 

 of the disease caused by this fungus and compares it with other 

 similar diseases. The third and last of these articles is published 

 in English in the Shokubutsu-gaku Zasshi (Botanical Magazine) 

 Tokyo, 36 s57 : 304-313, text-figs. 1-4, issued Sept. 20, 1916. This 

 article also gives a description of Valsa Paulowniae n. sp. in 

 English. One of the figures (Fig. 4) in each of these articles 

 gives the detailed microscopic structure of the fungus. The 

 other three figures show effects of the fungus on Paulo wnia trees. 

 Dr. Hemmi notes that the fungus was first collected in Aomori- 

 ken in N. Honshu in August, 1903, by Mr. T. Nakamura and re- 

 ported then as causing a very destructive disease of the "Kiri" 

 tree. All three articles are of importance in throwing light on a 

 very dangerous Paulownia disease of Japan which is analogous 

 to chestnut blight in America, both in its swift destructive action 

 and in causing the loss of timber much valued for cabinet-making. 



Bureau of Plant Industry, 

 Washington, D. C. 



