46 Mycologia 



ica," published in Torrey Bulletin 8: 421-444. 1901. — G. L. 

 Zundel. 



In Dr. Robert T. Morris's handy and excellent little book on 

 " Nut Growing," published last autumn by the Macmillan Com- 

 pany, the chief fungous parasites of nut trees are treated together 

 on pp. 153-158, and later under each tree separately. Melan- 

 conium oblongum, according to Dr. Morris, is gradually killing our 

 native butternut and is also attacking the imported Japanese wal- 

 nut. The hazel blight, Cryptosporella anomala, makes little head- 

 way among our native hazels, which are accustomed to it, but 

 violently attacks the Asiatic and European species when they are 

 imported. The bacterial walnut blight and chestnut blight are also 

 considered, together with methods of combating both the fungous 

 and insect pests of nut trees. 



In a note in Mycologia 13 : 58 the question was raised as to 

 whether the cause of the difference between Pucciniastrum as it 

 occurs on Rubus triflorus (R. pubescens) and on R. idaeus 

 aculeatissimus (R. strigosns) lay in the parasites or in the hosts. 

 In the summer of 192 1, Mr. C. W. Bennett, working in the de- 

 partment of plant pathology of the University of Wisconsin, 

 found that uredospores from Rubus triflorus did not infect R. 

 strigosus or R. occidentalism while those from R. strigosus infected 

 that host abundantly and R. occid entails sparingly, and on very 

 young leaves only. As far as these few experiments go, they 

 indicate that Pucciniastrum arcticum (Lagh.) Tranz. and P. amer- 

 icanum (Farl.) Arth. are distinct, and suggest that Rubus strigosus 

 and R. occidentalis are not equivalent hosts of the latter. — /. J. 

 Davis. 



A Fragrant Polypore 



Trametcs suaveolens is a large white polypore frequent on de- 

 caying willow trunks in the northern hemisphere and easily dis- 



