94 



Mycologia 



All future communications should be addressed to Laboratory 

 of Forest Pathology, Spokane, Washington. 



Insect galls are interesting to most mycologists, who will be 

 delighted to know that a large and valuable bulletin on this sub- 

 ject, fully illustrated with many drawings and photographs, has 

 recently been prepared by Dr. E. P. Felt and pubhshed as Bulletin 

 200 of the New York State Museum. It is called A Key to 

 American Insect Galls and one wonders how many pages would 

 be required to fully describe the American species of galls if 310 

 pages have to be devoted simply to a key. It may be said, how- 

 ever, that a good many descriptive terms are employed in the key 

 and that the excellent figures supplement these brief descriptions 

 in a highly satisfactory manner. Dr. Felt is to be congratulated 

 upon the preparation and publication of this much needed work. 



On Christmas Day, the following specimens, most of them in 

 a growing condition, were collected in Saxon Woods, near White 

 Plains, and presented to the Garden by Mr. W. H. Ballou. 



Daedalea confragosa, D. quercina, Elfvingia megaloma, Hexa- 

 gona alveolaris, Lenzites hetulma, Fomes populinus, Polyporus 

 Polyporus, Bjerkandera adusta, Coriolus nigromarginatus, C. 

 versicolor, C. prolificans, Tyromyces chioneus, Coriolellus sepium, 

 Irpiciporus lacteus, Hydnoporia fuscescens, Poria subacida, Cor- 

 ticium ejfiiscatum, Stereum lobatum, S. complicatum, Merulius 

 tremellosus, Exidia arborea, Auricularia Auricula, Guepinia spath- 

 ularia, Claudopus nidulans, Panellus stypticus, and Geaster 

 hygrometricus. 



A paper recently published in the Journal of Agricultural Re- 

 search by Stakman and others on the plasticity of biologic forms 

 of Puccinia graminis deals with questions of deep significance and 

 importance. Among the conclusions reached are the following: 



No one so-called bridging host nor any combination of such 

 hosts enabled any biologic form tried to infect naturally immune 

 plants nor to infect a highly resistant plant more readily. 



