142 



year of the Proceedings of the Academy, where additional information 

 can be found. The nomenchitnre for hosts is tliat of Britton and 

 Brown's "Illustrated Flora of the Nortliern States and Canada." 



The present list contains Ifl.j species of plant rusts under sixteen 

 genera, being an increase of more than :J3 per cent, over the previous 

 list of 1898, which contained 80 species under ten genera. 



COLEOSPORIACE.E. 



1. COLEOSPORIU-M SoNCiri-ARVENSIS (PcrS.) Willf. 



On Hieracium scabrum Miclix. Vigo Co., 5, 1893 (Underwood). 



2. COLEOSPORIUM IpoMCE.E (Srhir.) Buy. 



On Ipomoea pandurata (L.) Mey. 1896:171, 218. 



5. COLEOSPORIUM SOLIDAGINIS {/SV7((/'. ) TflXCm. 



On Aster azureus Lindl. 1893:50. 

 Ou Aster cordifolius L. 1893:51. 

 On Aster NoviB AngliiP L. 1893:51. 

 On Aster paniculatus Lam. 1893:51. 

 Oji Aster puniceus L. 1893:51. 

 On Aster sagittifoliiis Willd. 1893:51. 

 On Aster salicifolius Lam. 1893:51. 

 Ou Aster Sliortii Hook. 1893:51. 

 On Aster Tradescanti L. 1893:51. 

 On Solidago arguta Ait. 1893:51. 

 On Solidago csesia L. 1893:51. 

 On Solidago Cauaden.sis L. 1893:51. 

 On Solidago flexicaulis L. (,S'. latijolid L. ) 1893:51. 

 On Solidago patula Muhl. 1893:51. 

 On Solidago rugosa Mill. 1893:51. 

 On Solidago serotina Ait. 1893:51. 

 4. CoLEOSPORiuM Vernoni^e B. & C. 



On Vernonia fasciculata Miclix. 1893:51. 



On Veruonia Noveboracensis (L. ) Willd. 1893:51. 



MELAMPSORACE.^. 



• 5. Chrysomyxa albida KilhiK (ColcoxpDriinn Rnhi E. it II.) 

 On Rubus cuneifolius Pursh. 1893:50. 

 On Rubus villosus Ait. 1893:50. 



