179 



township 17 north. This section has an area of about seven hundred acres 

 and is bounded on three sides and crossed from north to south by public 

 highways. The land is gently rolling with a sandy loam soil and a red 

 clay subsoil. In the northwest quarter is what was once a lake but is now 

 a flourishing cornfield, on the western border of which a few small bogs 

 remain unditched. This region is drained by a ditch which is partly open, 

 and which crosses the low black lands of the southeastern quarter of the 

 section. Of the forty or fifty acres of timber land scarcely an acre can be 

 said to be in a state of nature, while the greater portion of this area is 

 closely pastured and part of it is in process of clearing. The present pop- 

 ulation is sixty-six and is entirely agricultural. The staple crops are corn, 

 wheat, oats, timothy and clover. Some fruit and a few vegetables are 

 grown for market, but usually for home consumption only. The or- 

 namentals are those usually found about country homes. The farms 

 are kept as free from weeds as in the average Indiana neighborhood. 

 Such a region is scarcely an inviting collecting ground and would often be 

 passed by as unworthy of attention, yet it yielded thirty-six species of 

 rusts on forty-three hosts. These are marked with an asterisk (*) in the 

 catalogue. 



The nomenclature of host plants is that of Britton's Manual, while 

 the rusts are named in accordance with the usually accepted nomenclature. 

 Synonyms are given for hosts when they have a different name in Gray's 

 Manual and for the rusts when the last published notice of these was 

 under a different name from that used in this catalogue. Reference to 

 previous publication in the Proceedings of the Academy are by year and 

 page. A set of specimens of this collection has been deposited in the her- 

 barium of Dr. Arthur, who has kindly verified all determinations. 



Order UREDINIALES. 

 Family Ooleosporiaceae. 



1. Coleosporium solidaginis (Schw.) Thuem. 

 *On Aster ericoides L. Hamilton. 

 *On Aster paniculatus Lam. Hamilton. 

 *On Solidago canadensis L. Hamilton, Marion. 



2 Coleosporium vernonle B. a ad C. 



*On Vernonia fasiculatus Michx. Hamilton. 



