* APR 15 1922 



MYCOLOGIA 



Vol. XIV MARCH, 1922 No. 2 



A NEW SEPTOBASIDIUM ON PINUS 

 STROBUS * 



Walter H. Snell 

 (With Plates 11-13) 



The writer is indebted for the opportunity to present this article 

 to the kindness of Dr. E. A. Burt. Two years ago specimens of 

 a species which appeared to be a Septobasidium, commonly found 

 upon the bark of the eastern white pine, were sent to Dr. Burt 

 for identification. In reply he stated that this fungus had never 

 been found sporulating and suggested that an effort be made to 

 find it in a fertile condition. The writer immediately began col- 

 lecting the fructifications from different localities in New England, 

 and later extended the field of observations to Wisconsin. Collec- 

 tions were made throughout that summer and fall into November 

 and beginning again early the next spring. In the summer of 

 1920 at North Conway, N. H., August was ushered in with moist 

 or rainy weather which lasted through the middle of the month. 

 A collection made after about two weeks of this sort of weather 

 showed that the probasidia had \ germinated and sporulation was 

 taking place in abundance. The material was sent to Dr. Burt 

 and he very magnanimously returned it to the writer for study and 

 description. The name given to" the fungus is Septobasidium 

 pinicola. 



This species of Septobasidium is a northern form growing at 

 least as far north as northern New Hampshire, whereas most of 

 the species of the genus are tropical or subtropical. Septobasidium 



* Office of Investigations in Forest Pathology, Bureau of Plant Industry, in 

 cooperation with Department of Botany, Brown University. 



[Mycologia for January (14: 1-54) was issued March 6, 1922] 



55 



