NOTES ON PLANT DISEASES OF CONNECTICUT. 727 



Apparently this fungus has rarely been reported in this country. 

 Another rust, P. Centaurea DC, also occurs on other species 

 of Centaurea both here and in Europe. Both of these species 

 have frequently been grouped with other Puccinias, the species 

 here reported being usually placed under P. suaveolens, along 

 with the rust on Cnicus now commonly known by that name. 



ELM, Ulmus sp. 



ANTHRACNOSE, Septogl&um Ulmi (Fr.) Br. and Cav. This 

 fungus was found on an escaped seedling of Ulmus campestris 

 (apparently) along the roadside in Centerville. It produces 

 numerous, minute, at first yellowish but finally reddish-brown 

 spots on the upper surface of the leaves, while below the 

 fruiting stage shows as minute, glistening, yellowish globules. 



The fungus has usually been reported as Phleospora Ulmi 

 (Fr.) Wallr., but the writer agrees with Briosi and Cavara 

 that it belongs more properly under the above genus. Cylindro- 

 sporium ulmicolum Ell. and Ev. possibly is not distinct from 

 this species, as its description is very similar. This Septoglceum 

 is thought by some writers to be the spermagonial and Piggotia 

 astroidea B. and Br., the pycnidial stage of Dothidella Ulmi 

 (Duv.) Wint. [Phyllachora Ulmi (Duv.) Fckl.], though neither 

 of these two stages were found associated with our specimens. 

 The asco stage of Dothidella Ulmi, while not uncommon in 

 Europe, does not seem to have been reported in this country 

 except the doubtful specimen sent by Torrey to Schweinitz. 



GOOSEBERRY, Ribes sp. 



RUST, 2cidmm Grossularice (Pers.) Schum. This rust was 

 found on the leaves of a species of gooseberry, apparently 

 escaped from cultivation, in the woods of an abandoned farm 

 belonging to the water company at Ansonia. The fungus forms 

 rather small clusters of cup-shaped fruiting bodies on the under 

 surface of the leaves, producing discolored spots above. It is 

 probably connected with some species of Puccinia on Carex 

 as its mature stage, as has been found to be the case with several 

 European forms on Ribes sp. We have never seen this TEcidium 

 causing much harm to its hosts, and it seems to occur chiefly 

 on the wild species. 



