50 Aiiicru'iin Jlnrtifu/tiini/ Soclrlij. 



these minute black points. Freciuently the plants may have quite u number 

 of leaves in this condition and still remain vij^ornus, and show very little in- 

 elication of disease. At other times, however, a peculiar abnormal condition 

 is induced that has been aptly described as the "strawberry yelKjws" by one 

 of my correspondents. The older leaves die down and lie close to the 

 ground, while the younger ones have a spindling, upright growth, and a pe- 

 culiar, sickly, yellow color. This condition sometimes a{)jicars in newly set 

 lieids, during the summer, arresting growth and comi)letely ruining the 

 plant*! as far as it extends. In bearing fields it usually makes its appearance 

 when the plants first start in llic spring, destroying the crop, and often 

 killing the plants outright. Sometimes, howtn-er, the plants seem to recover 

 anil make a feeble growth later in the season. This disea.se has proved with 

 us far more destructive than the other, but fortunately it has so far been 

 restricted to somewhat limited areas, and to a few rather tender varieties. It 

 has destroyed considerable fields of ^fanchester and Great American for us," 

 ■and compelled us to abandon the culture of these varieties. I have also seen 

 touches of it on Crescent, Sliarpless, Minor, and other varieties, but so far it 

 has done them no practical harm. 



Early in June I received specimens of Manchester leaves from Mr. Henry 

 Schnell, of (Jlasgow, Mo., showing the black rust. He reported that it was 

 the only kind showing the disease, and that it did not seem to injure the 

 fruit. About the first of September he wrote again, saying that about one- 

 third of his this spring's planting of Crescents were dying down and making 

 no runners. From the specimens sent I judge that this, too, was a case of 

 the i)lack rust. 



Mr. G. Cowing, of Muncie, Ind., reports a peculiar disease, which he esti- 

 mates has damaged the strawberry crop of his section to the extent of eight 

 or ten per cent. From his description this also seems to be the black rust. 

 He says it is much wor.se on badly drained land and on varieties with light 

 colored leaves, such as Crescent, Chami)ion, and Bidwell,'those with dark 

 foliage, like Wilson, Duncan, and Cumberland, escaping much better. He 

 thinks it worse in ncnvly planted fields, and in those that arv very heavily 

 mulched. 



P'rom a brief drscrii)lion given by Mr. H. M. Knglc, ol' Marietta, I'a., 1 

 judge that this disea.se is also known in that State, but though, during last 

 sununer, I received communications in regard to strawberrj' diseases from 

 twenty States and Provinces, I received no hint of its occurrence except at 

 the localities just named. I should be glad to hoar from the members of 

 this Society, if it has been more widely okservcd. 



I do not know that any remedies have been tried for this disease. 



Before leaving the subject of these rust producing fungi, I wish to say that 

 both these forms belong to the class known as incomplete fungi. That is. 

 that they are ct)nsidered as but the first, or immature forms of species that 

 <lo not reach their full development till later in the .season. So it is quite 

 po.ssible that some of the species referred to at the beginning of this article. 



