92 



Mycologia 



the laboratory building and plant houses in April, 191 7. Of the 

 33 papers published in this handsome volume of 521 pages and 

 many illustrations, 10 are mycological in character, contributed by 

 Atkinson, Dodge, Jackson, Kunkel, Metcalf, Murrill, Olive, Reed, 

 Shear, and Smith. 



The Rose Canker and Its Control is the subject of a Bulletin 

 of the Massachusetts Agricultural Experiment Station, published 

 in May, 1918, under the authorship of Dr. P. J. Anderson. This 

 disease, sometimes called the crown-canker of the rose, is com- 

 paratively new, having been known as a parasite only two years. 

 The causal fungus is Cylindrocladium scoparium Morgan. A full 

 description of the fungus and its effects, as well as various 

 methods of control, are given in the bulletin mentioned. 



A recent paper on Some Singapore Boletinae, by Patouillard 

 and C. F. Baker, contains descriptions of 16 new species of Boleti 

 collected during a period of frequent showers in the Singapore 

 Botanical Gardens. These specimens are as follows : Boletus 

 aureo-mycetinus, B. spinifer, B. tristis, B. phaeocephalus, B. nigri- 

 cans, B. umhrinellus, B. veluticeps, B. cyanopus, B. viscidulus, B. 

 retisporus, B. pernanus, Boletopsis corrugatus, Boletopsis icter- 

 inus, Boletopsis singaporensis, Phylloporus malaccensis, and Stro- 

 bilomyces porphyrius. 



Professor F. S. Earle has been sending a number of specimens 

 of woody and fleshy fungi to the Garden herbarium from Porto 

 Rico, where Mr. Edgar Nelson has now joined him. Regarding 

 the gill-fungi, Professor Earle writes, under date of December 

 24, " They are certainly very rare in the region of Rio Piedras, 

 being chiefly represented by species of Marasmius and Lepiota. 

 They are very local and only appear when weather conditions are 

 just right. I do not doubt, however, that the Island will yet 

 afford a long list of them." 



Severe parasitic wood-rots of peach trees, due to Coriolus 

 prolificans and C. versicolor, were observed by Mr. John A. 



