224 



Mycologia 



An exhaustive report, containing 175 pages and 14 plates, on 

 the history and canse of cocoanut bud-rot, by J. R. Johnston, 

 appeared in February, 191^ as Bulletin 228 of the Bureau of 

 Plant Industry at Washington. The author considers this se- 

 rious disease as bacterial in origin and amenable to control by or- 

 dinary methods of sanitation and proper cultivation. 



The seventh annual report of the Forest Park Reservation 

 Commission of New Jersey, which has just been distributed, 

 contains valuable suggestions regarding forest and shade trees 

 and their protection, with some particularly good advice con- 

 cerning the chestnut canker and its progress in the state. 



A series of papers on the hymenomycetes of Lappland, by Lars 

 Romell, was begun in Arkiv for Botanik 2: 191 1, the first paper 

 on the Polyporaceae, in which 12 species are described as new, 

 comprising 35 pages and two double plates. These studies are 

 of special interest to mycologists in this country because of the 

 close relationship that exists between the plants of Lappland and 

 boreal America. 



A preliminary report of 116 pages on the gill-fungi of Ohio, 

 with keys to genera and species, by W. G. Stover, has just 

 appeared as part 9, volume 5, of the Proceedings of the Ohio 

 State Academy of Science. This report is not only a guide to 

 the species recognized but also to the literature describing them, 

 and should prove valuable to students and others interested in 

 the Ohio gill-fungi. The term preliminary " is used very ad- 

 visedly, as no one realizes better than 'Mr. Stover how much 

 there is still to learn about this subject. 



Observations on Marasmius oreades, the fairy-ring " mush- 

 room, have been made by Jessie Bayliss (Jour. Econ. Biol. 6: 

 111-132. pi. 5-7. 191 1 ) with the following results, as reviewed 

 in the Experiment Station Record for April, 1912. 



It was found that M. oreades lives parasitically on grass. It 

 attacks young roots, killing them by means of some toxic secretion. 

 The fungus at first exerts a stimulating influence, and the grass 



