PLANT DISEASES OF CONNECTICUT. 355 



were caused by this fungus. Of course the fruit of this orna- 

 mental plant is of no economic importance. 



ROSE, Rosa sp. 



CROWN GALL, Bacterium tumefaciens Sm. & Towns. Plate 

 XIX b. We have reported previously this bacterial disease on 

 the following hosts: apple, bittersweet (Japanese), blackberry, 

 peach, plum, and raspberry. Besides these, we have reported 

 a somewhat similar trouble on the branches of oak trees, and a 

 trouble of grapes which we have considered a winter injury, 

 but which some others attribute to the crown gall organism. 

 While the rose has been reported elsewhere as a host, it had not 

 been found infected in Connecticut until Walden, in December, 

 1911, while inspecting Manetti stock recently imported from Eng- 

 land by A. N. Pierson of Cromwell, discovered a few plants 

 showing the galls conspicuously on the roots. Specimens of 

 these have been planted in our greenhouse for over a year, and 

 the disease does not seem to have as yet very seriously affected 

 the plants, or to have spread to any extent to the new roots. 



TURNIP, SWEDE, Brassica campestris. 



PHOMA ROT, Phoma Napobrassica Rost. Plate XX c-d. In 

 December, 1912, Mr. W. N. Durgy of Danbury noticed a rot 

 trouble in his Swede turnips, and later sent specimens to the Sta- 

 tion for information. Concerning this he wrote: "As I have 

 a trouble with my Rock turnips this year that I never had before, 

 I thought I would send you a sample. They were nice and solid 

 when I put them in the cellar, and now nearly half of them are 

 like the sample. Will you kindly report what is the cause of 

 the trouble." Later, in answer to inquiries, he furnished the fol- 

 lowing information: "The turnips did not show any spots when 

 they were dug. The only thing we saw when we dug them was 

 a decay on a very few around the top, so that when we pulled 

 them, the top would come off, but I thought nothing of this. 

 I have not heard of any similar trouble around here. I have 

 made a specialty of raising turnips for a good many years, and 

 have always stored them in the same place, i. e., the cellar bottom. 

 My cellar is warm, but not very damp. I have had the farm 

 for sixteen years, and never raised but one crop of turnips 



