204 SEVENTEENTH REPORT. 



Aecidiiiiu Oxalidis Thiim. (III. Pucciuia Soi-giii ^^cll^v.l Raised 

 in gTeeuhoii.se by infection. Ann Arbor, Mar. 1!»1.~) Mains. 



Aeciudini Peckii DeToni. (III. Puccinia peckii (DeToni) Kell. 

 on Carex sp.) On Oenothera biennis. Battle Creek, E. Lansing, 

 Ann Arbor. June 7-July 2. Sitalding. Real. Mains. 



Aecidiuiu Pensteuiouis 8chw. (III. I'uccinia americana Lagerh.) 

 Ou Peutstenion pubescens. Ann Arbor. May 31. Spalding. 

 This should be compared with aecidial stage of Pucciuia Andro- 

 pogouis Sclnv. 



Aecidium Podophylli Schw. (III. Pucciuia Podophylli Schw.) 

 Autoecious. 



Aecidium Polygalinum I'k. Ou Polygala senega. Ann Arbor, May. 

 Spalding. 



Aecidium punctatum Pers. (III. Puccinia Pruni-sjdnosa Pers.) 

 On Anemone qnincjuefolia. Ann Arbor. May 2<3. Merrow. 



Aecidium pustulatum Cert. (III. Pucciuia pustulatnm (Curt.) 

 Arth. on Andropugon sp.j Ou Commandra umbel lata. Ann 

 Arbor. J-ime 19. Pieters. 



Aecidium Kauunculacearum. D. C. (III. Puccinia jierplexans 

 Plowr. P. calamagrostis Syd. P. maguusiana Korn. Uromyces 

 dactylidis Ottlr. and U. poa?. Rabenh : these have been con- 

 nected with Aecidia on Ranunculus sp. Puccinia siniillima 

 Arth., connected with Aueuu^ne canadensis. ) Ou Anemone 

 quinquefolia, Isopyrum biteruatum. Ranunculus canadensis, 

 etc. Ann Arbor. E. Lansing, New Richmond, etc. May-.Jnne. 

 Pieters. Mains, C. H. K., Beal. 



Aecidium Ranunculi Schw. (III. Puccinia Aetonia^ Arth.) On 

 Ranunculus ;ibnrtivus. Ann Arbor, New Richmond, etc. May- 

 June, S])alding. Maiu.s, C. H. K., etc. 



Aecidium Rhauuii Pers. (III. Puccinia corouata Cke. i On Rliam- 

 uus alnifolia. Ann Arbor, Lansing. May IS-Jnne 12. Sjialding. 

 Beal. 



Aecidium rnbellnm (imel. (III. Pucciuia Phragmitis iSchum.) 

 Kiirn.) On Rmnex sp. liattle Creek. .July '2. Spalding. 



Aecidium Sauibuci Schw. (111. Pucciuia liolleyaiia Sacc.i Ou 

 Sambucus canadensis. Ann Arbor. Battle Creek, New Rich- 

 mond, etc. June. Spalding, C. H. K., etc. 



Aecidium Senecionis Desm. (III. Puccinia conglomerata Auto- 

 ecious. 



Aecidium Tlialictri (Irev. (ITeteroecious. but connections not 

 clear.) Ou Thalictrum revolutum. T. dioicum. Anu Arbor. May 

 30. Spalding, Pieters. 



Aecidium T'rtica^ Schum. (III. Pucciuia caricis (Schum.) Re- 



