392 BOTANICAL GAZETTE [NOVEMBER 
fruit. Five days after inoculation the rotted area of the ripe fruit was 1.2°™ 
in diameter. No infection occurred in the green fruit. Culture characteristics 
are discussed. Rhizoctonia on the tomato is also discussed, the disease being 
marked by a chocolate-colored, wrinkled epidermis. The fungus penetrates the 
cells in all directions, and no conidia are formed. It was isolated and tomatoes 
were inoculated, resulting in their complete decay in two weeks, both ripe and 
green fruit. The ripe rot due to Colletotrichum lycopersici was studied. The 
fungus was isolated and inoculations were made, producing four days after 
infection a diseased area 0.6°™ in diameter on either ripe or green fruit. Fusarium 
of undetermined species and also F. Solani Mart. were isolated, used in inocula- 
tions, and the culture characters determined. 
Miss WALKER’ discusses and describes a form of Sphaeropsis differing from 
the ordinary form principally in the size of the spore, the size and thickness of 
pycnidium, and the absence of the ostiole. The new form seems to be more 
vigorous as a rot-producer that the old one. Inoculated into apples in every 
case it produced the characteristic black rot. The author suggests that possibly 
the variation in size of the spore may be due to the nature of the fruit upon which 
it is growing. 
HeaAtp® briefly describes the various types of barley smuts, with notes hoon 
experiments as to the best mode of treatment for their prevention. The following 
treatments were used: formalin steep, modified formalin steep, hot water treat- 
ment, corrosive sublimate steep, copper sulfate steep. The percentage of ger- 
mination was lessened by all the treatments except the hot water, being reduced 
40 per cent. by formalin 1/10, and 70 per cent. by 1/15. The author recommends 
as the formalin steep one pint to 20-25 gallons of water. : 
Wotr?? found Pestalozzia uvicola on ripe grapes. It was isolated in pure 
culture and inoculations made upon the grape, resulting in numerous pustules 
after proper incubation period. Sections of these pustules showed the characteristic 
spore, but, contrary to the usual mode of Pestalozzia, the spores were borne 
what the author regards as well-defined pycnidia, which structure would be 
entirely out of accord with the genus or with any of the Melanconiaceae. It is 
unfortunate that the drawing (p. 71) leads one to infer that the spores are not 
borne in the true "pycnidium, as the author describes, but rather in the cavity 
resulting from hypertrophy of the surrounding host tissues.—F. L. TEVENS. F 
Mold of maple syrup.—This mold, frequently observed during the past 
years, has been ascertained by Heatp and Poot"! to be Torula saccharina - 
was grown in pure culture on media of varying composition. They conclu 4 
that the concentration of the sugar solution in which the fungus was 8f° 
® Warxer, Leva Bett, A new form of Sphaeropsis on apples. 
® HEAatp, F. D., Seed treatment for the smuts of winter barley. 
"© Wotr, F. A., A rot of grapes due to Pestalozzia uvicola Spegaz- 
** Heatp, F. D., AND Poot, V. W., The mold of maple syrup. 21st Ann. Rep- 
Univ. Neb. Agric, Exp. Sta. 54. 1908 
