42 Jour 7ial of Mycology [Vol. 14 



follows: European canker (Nectria ditissima Tul.) ; New York 

 Apple-tree Canker (Sphaeropsis malorum Pk.) ; Black Spot Can- 

 ker (Gloeosporium malicorticis Cordley) ; Illinois Apple-tree 

 Canker (Nummularia discreta Tul.) ; Bitter rot Canker (Glomer- 

 ella rufomaculans (Berk.) Spal. & v. Schar. ( ; and Blight Canker 

 of Apple-trees (Bacillus amylovorus (Burr.) de Toni). It is 

 to the last of these that Mr. Whetzel's illustrated Bulletin is 

 specially devoted. 



Smith, Clayton O. 



The Leaf-spot on Cucurbits [Sphaerella citrullina (Chester) 

 Smith]. A Leaf-spot disease of Egg-plant (Ascochyta lycopersici 

 Brun.), and Leaf-spot on Bean and Cowpeas (Phyllosticta phase- 

 olina Sacc.) are included in the "Study of the Diseases of some 

 Truck Crops in Delaware." The perfect stage of Phyllosticta 

 citrullina Chester (transferred to Ascochyta citrullina) was ob- 

 tained by cultures, namely, Sphaerella as given above. 



Berger, E. W. 



Aschersonia aleyrodes, Aschersonia favo-citrina. and the 

 Brown Fungus are those alluded to and recommended under the 

 heading "Whitefly conditions in 1906 — the use of the Fungi," 

 in Bulletin No. 88, Florida Agricultural Experiment Station, 

 January 1907. Spraying for Scale would kill these fungi service- 

 able for reducing the Whitefly. It is suggested that to reduce the 

 scale, fungi may be introduced, namely, the Red Headed Scale 

 Fungus (Sphaerostilbe coccophila), the Gray Headed Scale Fun- 

 gus (Ophionectria coccicola), and the Black Scale fungus (My- 

 rangium duryii). 



Edgerton, C. W. 



The conclusions of "The Rate and Period of Growth of 

 Polyporus lucidus." Torreya, Vol. 7, No. 5, May 1907, are: (i) 

 Polyporus lucidus is a fast growing member of the Polyporaceae, 

 growth averaging about one-half centimeter per day for the grow- 

 ing period; (2) Growth is exogenous, taking place entirely at 

 the edge of the plant and continuing as long as conditions are 

 favorable; (5) The change in the development from stalk to pil- 

 eus is a gradual process; (4) The average lateral growth is but 

 slightly more than the terminal growth. 



Smith, R. Grieg. 



In the Proceedings of the Linnean Society of New South 

 Wales, 1904, Part 3. June 29, is described the "Red String of the 

 Sugar Cane," not to be confounded with the Sereh Disease 

 (cause ?), Sugar Cane Disease of Massee [Trichosphaeria sacch- 



