PLANTS OF IOWA 61 



735. G. macropus, Lk. 



On Red Cedar, Cedar apple. Bust on apple foliage. 

 UREDO. 



736. U. agrimonlce, DC. 



On Agrimonia eupatoria, L. 



737. U. boutelouce, Arthur (n. sp.) 

 On Bouteloua racemosa, Lag. 



738. U. iridis, Duby. 



On Iris versicolor, L. 



739. U. polypodii, (Pers.) 



On Pellaea gracilis, Hook. 



740. U. caeoma-nitens, Schw. 

 Abundant on blackberries. 



C^EOMA. 



741. C. luminatum, Schw. 

 On Rubus villosus, Ait. 



742. C. nitens, S. 



Eust on blackberry. 



743. A. actcece, Wallr. 

 On Actace alba, L. 



744. A. albescens, Grev. 



On Adoxa moschatellina, L. 



745. A. aster atum, Schw. 

 On Aster cordifolius, L. 



746. A. berleridis, Gmel. 

 On English barberry. 



747. A. caladii, Schw. 



On Arisaema dracontium, Schott. ; A. triphyllum, Torr. 



748. A. pentstemonis, Schw. 



On Castilleia sessiliflora, Pursh. 



749. A. clematidis, DC. 



On Clematis virginiana, L. 



750. A. compositarum, Mart. 



On Holianthus strumosus, L. ; Eudbeckia lachiniata, L. ; 

 Senecio aureus, L. 



