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66 Journal of Mycology ] Vol. 11 



the inhibition of maturer tissues in the leaf. So far as this culture 

 can be taken as evidence, it shows that a true secondary generation 

 of the aecidium probably does not occur in P. Podophylli. 



Summary. 



The following is a complete list of successful cultures made 

 during the season of 1904. It is divided into the two series : spe- 

 cies previously reported by the writer or other investigators, and 

 species now reported for the first time. 



A. Species previously reported. 



1. Melampsora Medusae Thuem. Teleutospores from 

 Populus deltoides Marsh, and P. tremuloides Michx. sown on 

 Larix decidua Mill., and from P. deltoides Marsh, sown on L. 

 laricina (Du R.) Koch. 



2. Phragmidium speciosum Fr. Teleutospores from Rosa 

 Arkansana Port, sown on R. Arkansana Port., R. humilis Marsh., 

 R. Carolina L., and R. nitida Willd. 



3. Puccinia Helianthi Schw. Teleutospores from Heli- 

 anthus mollis Lam. sown on H. annuus L. and H. mollis Lam. 

 with abundant infection, and on //. hirsutus Raf., H. occidentalis 

 Ridd., H. strumosus L., and H. tomentosus Michx. with slight 

 infection ; from H. grosse-serratus Mart, sown on H. annuus L., 

 and H. grosse-serratus Mart, with abundant infection, and on H. 

 tomentosus Michx. with slight infection; and from H. laetiilorus 

 Pers. sown on H. annuus L., H. laetiilorus Pers., and H. scaber- 

 rimus Ell. with abundant infection, and on H. divaricatus L., 

 H. Kellermani Britton, H. mollis Lam., H. occidentalis Ridd., and 

 H. tomentosus Michx. with slight infection. 



4. Puccinia subnitens Diet. Teleutospores from Dis- 

 tichlis spicata (L.) Greene were sown on Chenopodium album 

 L., Cleome spinosa L., Lepidium apetalum Willd., L. Virginicum 

 L., Sophia incisa (Engelm.) Greene, and Erysimum asperum DC. 



5. Puccinia Pammelii (Trel.) Arth. Teleutospores from 

 Panicum virgatum L., sown on Euphorbia corollata L. 



6. Puccinia verbenicola (E. & K.) Arth. Teleutospores 

 from Sporobolus longifolius (Torr.) Wood sown on Verbena 

 urticae folia L. 



7. Puccinia Windsoriae Schw. Teleutospores on Tri- 

 cuspid seslerioides Torr. sown on Ptelea trifoliata L. 



8. Puccinia Fraxinata (Schw.) Arth. Teleutospores 

 on Sparthm cynosuroides Willd. sown on Fraxinus lanceolata 

 Borck. 



9. Puccinia Impatientis (Schw.) Arth. Teleutospores 

 on Elymus Virginicus L. sown on Impatiens aurea Muhl. 



