206 PATHOLOGY [Bot. Absts., Vol. IV, 



were found attacked in the older plantations. Both of the common methods for treatment 

 were found satisfactory, i.e., (1) the peeling off of all diseased bark and protecting the cam- 

 bium until renewal begins, and (2) the scraping away of only the discolored tissue. Die-back 

 and an abnormal leaf fall attributed to Phytophthora during the rainy season were found 

 severe on many plantations. — R. D. Rands. 



1368. Sylvan, Nils. Uber den Kieferndreher Melampsora pinitorqua (Braun) Rostr. 

 [Melampsora pinitorqua (Braun) Rostr.] Naturw. Zeitschr. Forst- u. Landw. 16: 118-127. 

 1918. — Melampsora pinitorqua was first known to occur in Sweden in 1874. Examination of 

 several pine twigs infected the previous year showed no living mycelium of the fungus. Nor 

 do old infected spots ever produce new aecia. Infection each spring must come from aspen 

 leaves. The younger the pines, the more destructive is the disease to them. One-year old 

 trees are often killed outright. Older ones lose their leaders, new growth developing. At- 

 tacked twigs which remain alive are much bent, often becoming "S"-shaped. In several 

 nurseries a small percentage of the seedlings were affected. Ends of twigs killed by the para- 

 site hang down like frost injured ones. As high as 100 per cent infection occurs under favor- 

 able conditions. Various outbreaks are mentioned which have occurred in Sweden, the 

 disease appearing to have become very widespread. Study of these outbreak areas indicate 

 that the factors influencing the spread of the fungus from Populus to pines are: openness of 

 location allowing free access of the wind, direction of wind, height of poplar trees, proximity 

 of the two hosts, and exposure of the pines to the wind. The sporidia are distributed only 

 to a limited distance. The author intimates that distribution is largely effected by the 

 urediniospores. — Perlcy Spaulding. 



1369. Sylvan, Nils. 1917 Ars knackesjuka norra Vlstergbtland. [Melampsora pini- 

 torqua in V. in 1917.] Medd. Stat. Skogsforsoksanst. 15:192-204. PL 19-22. 1918.— A 

 comparative study of the disease caused by Melampsora pinitorqua in 1917 and 1916 in northern 

 Viistergotland, Sweden. In 1916 it was very abundant and injurious. In 1917 it had almost 

 disappeared. The author attributes this great difference to abundant precipitation in the 

 spring and early summer of 1916 when the fungus from the old Populus leaves was infecting the 

 pines; and to a lack of rain at the same time in 1917. A correspond ignly low temperature in 

 1916 and high one in 1917 also is believed to have affected the fungus. It is significant that the 

 years 1873, 1892, 1898 and 1912, when bad outbreaks of the disease occurred, were also charac- 

 terized by heavy rainfall in May and June. A moist May starts the disease but a moist 

 first half of June greatly increases it in severity and abundance. — Perley Spaulding. 



1370. Tanaka, Ty6zabor6. New Japanese fungi — notes and translations. VIII. My- 

 cologia 12:25-32. 1920. 



1371. Taubexhaus, J. J. Recent studies on Sclerotium rolfsii Sacc. Jour. Agric. Res. 

 18: 127-138. PI. 8-6, fig. 1. 1919.— Sclerotium rolfsii is reported as affecting 32 different 

 host plants. "Southern sclerotium rot" is suggested as a common name for the disease pro- 

 duced by it. The range of the fungus is essentially southern and it is found attacking plants 

 grown in light sandy loam as well as vegetable products in storage. The fungus is a true 

 parasite but considerable air and moisture are required for infection. Incubation period 2 

 to 6 days. Mycelium is in strands or radial fans. Sclerotia vary in size, depending on the 

 host. No physiological specialization has been noted. — D. Reddick. 



1372. Turley, H. E. New fruit fungi found on the Chicago market. Science 50: 375-376. 

 Oct., 1919. — The new fruit diseases found on the Chicago market are: a new Botrytis on apple, 

 Polyscytalum on grape fruit and Fusarium on grapefruit.— A. //. Olivers. 



1373. yax Hall, C. J. J. Voorloopige Mededeeling over de wortelschimmels van de Thee. 

 (Preliminary account of the root diseases of tea.] Dept. Landb. Nijv. en Handel. Meded. 

 Proefstation voor Thee (Buitenzorg) 58: 26-27. 1918. — Seven kinds of root diseases are briefly 

 considered and ascribed to the following fungi: Roscllinia (bothrinaf), Rosellinia (bunodes?) , 



