314 
Mycologia 
also causes a rot of potatoes similar to but not identical with this 
disease. 
In the April number of Phytopathology, J. E. Howitt and W. 
A. McCubbin published an account of an outbreak of white-pine 
blister rust, Cronartium ribicola, in Ontario. The Peridermium 
stage has been found on both native and imported white pine and 
the Cronartium stage on five cultivated and four wild species of 
Ribes. Black currants have in several instances suffered severe 
injury from the disease. 
Number four of the second volume of Illinois Biological Mono- 
graphs consists of an account of the Porto Rican species of the 
genus Meliola by Professor F. L. Stevens. The number of spe- 
cies listed is 95, of which 56 are described as new. Six varieties 
are also recognized, all new. The paper contains five plates, con- 
sisting of photomicrographs, the most conspicuous feature of 
which is the absence of all detail. It is to be lamented that in a 
paper of this size and importance more time and attention has 
not been devoted to the matter of illustration. 
Among specimens of fungi recently collected in Surinam by 
Mr. Jacob Samuels are the following: Amauroderrna Chaperi, 
Auricularia Auricula, Auricularia nigrescens, Cladoderris den- 
dritica, Coriolopsis caperata, Cycloporellus iodinus, Earliella cor- 
rugata, Elfvingia tornata, Elfvingiella fasciata, Eomes Auberia- 
niis, Eomitella supina, Eidvifomes extensus, Guepinia spathu- 
laria, Lentinus strigosus, Pogonomyces hydiioides, Rigidoporus 
siirinamensis, Stereum elegans, Trametes cubensis. 
The University of Illinois Agricultural Experiment Station 
Bulletin No. 189 contains the results of an extensive study of the 
parasitic species of Rhizoctonia in America. There are at pres- 
ent recognized two parasitic species of this genus, R. No/anf Kuhn 
andR. Crocorum (Pers.) DC. About 165 plants have been listed 
in the United States as subject to the attacks of Rhizoctonia 
Solani, including many floricultural plants, vegetables, and field 
crops. The disease produces damping-off of seedlings or rotting 
