300 



Mycologia 



two grasses in size and habit of growth and also between the 

 gross appearance of the rusts they bore. The resemblance was 

 furthermore found to extend to the microscopic features of the 

 rusts. This led to sowing the teliospores upon M. coccineum, 

 which was done June 23, and resulted in production of pycnia 

 June 30, and aecia July 11. Although not so strong development 

 as in the preceding case the gross and microscopic appearances 

 were the same, and left no doubt that P. Schedonnardi is to be 

 considered synonymous with P. Muhlenbergiae, a species of many 

 races and hosts. 8 The middle of September subsequent to these 

 cultures a letter was received from Mr. E. Bartholomew, of 

 Stockton, Kans., in which he gives the following account of 

 observations, most strongly confirming the conclusion reached 

 from cultures. He says : " Standing in the doorway of the Mt. 

 Nebo Presbyterian Church, three and one half miles south of our 

 home, on June 11, 191 6, I noticed, very close to the building, a 

 large number of plants of Malvastrum coccineum profusely at- 

 tacked by Aecidium malvicola Arth., and on examining the 

 grasses growing among the Malvastrum there was found teleuto 

 material on dead Schedonnardus, and on the developing young 

 leaves and sheaths abundant uredo of Puccinia Schedonnardi! 

 Continued examinations for several weeks, as the Puccinia de- 

 veloped into the III, led me to conclude beyond a peradventure 

 that the aecium is no more nor less than I of this fungus as the 

 grass was infected only in the near reach (not to exceed one rod) 

 of the Malvastrum. While I have collected this Puccinia several 

 times in the past ten years I have not come across Aecidium 

 malvicola since May, 1904 (F. Col. No. 1905)." 



6. Puccinia subnitens Diet. — This rust is probably the most 

 remarkable known for the number and diversity of its aecial 

 hosts. The present addition of two families to the aecial hosts 

 as previously recorded is entirely the result of information sup- 

 plied by Mr. E. Bethel, who had made repeated observations of 

 propinquity in the field, and verified his assumptions of relation- 

 ship by cultural tests in his garden in Denver. 



Telial material on Distichlis spicata obtained by Professor H. 



8 For previous cultures see Jour. Myc. 11: 51. 1905; 13: 192. 1907; 

 Mycol. 1: 251. 1909; 2: 226. 1910; 4: 18. 1912; and 7: 82. 1915. 



