lis Report of the Botanist of thb 



of the Rhizoctonla stem-rot of carnations. The leaves had a 

 sickly, yellowish color and were perfectly limp. The main stem 

 and its uumer(yus branches were soft-rotten at the surface of the 

 soil, so that when an attempt was made to pull an affected plant 

 it l)roke off readily at that point, leaving the main stem in the 

 ground and many separate branches in the hand. The basal 

 portions of these branches were disintegrated, the wood ele- 

 ments being separated from each other as if the tissues had 

 been macerated. 



The rotting stems contained an abundance of Rhisoctonln, 

 various other fungi and nematodes, which latter are of course 

 expected to occur in tissue so much decayed. Although not yet 

 tested by inoculation experiments, the indications are that 

 RMzoctonia killed the plants. 



It is of interest to note that the plat in which the plants were 



growing had been planted with carnations in the season of ISflO, 



and they are said to have suffered considerably from Rhizoctonki 



stem-rot. 



ON Coreopsis lamccolata. 



Next to the plat of Sweet Williams above mentioned there 

 were two rows of Coreopsis lanceolata which, so the owner in- 

 formed us, had been considerably diseased during the summer. 

 Only a few of the plants were killed outright, but from many of 

 them the lower leaves had rotted away. The rot seems to start 

 in the base of the petiole where it comes in contact with the soil. 

 The decaying leaves were overrun with RMzoctonia, but what 

 relation the fungus bore to the disease can only be conjectured. 



ON THE violet. 



{Viola odorata.) 



In October, 1899, two diseased violet plants were sent to us 

 from Little Palls, N, Y. Both of these plants showed RJdznctQ- 

 nia, leading to the suspicion that violets also are attacked by 

 this fungus; but when a personal examination of the afflicted 

 violet house was made, not another case of RMzoctonia could be 

 found. The trouble was caused by Glceosporium violw. More- 



