Orton : Notes on Polemoniaceous Rusts 177 



Microsteris micrantha (Kellogg) Greene. (Collomia micrantha 



Kellogg.) Colorado, Montana, Utah. 

 Phlox dwaricata L. Illinois, Iowa, Missouri. 

 Phlox longifolia Nutt. California, Colorado, Idaho, Nevada, 



Utah. 



Phlox multiflora A. Nels. Colorado. 



Phlox speciosa Pursh. Oregon. 



Phlox Stanshurgii (Torr.) Heller. Nevada. 



2. Allodus Douglasii (Ellis & Ev.) Orton 



Puccinia Douglasii Ellis & Ev. Proc. Acad. Phil. 1893 : 152. 1893 

 The species was described on Phlox Douglasii collected at 

 Detroit, Utah, May 26, 1891, by Marcus E. Jones. The rust 

 differs quite markedly from Puccinia plumbaria in that the telia 

 arise from a diffused mycelium usually in linear series on each 

 side of the midrib and the sori are very early naked and promi- 

 nently pulvinate. The spores are much thickened above with 

 smooth walls and concolorous persistent pedicels. The aecial 

 stage differs in no pronounced way from the aecial stage of P. 

 plumbaria and it is extremely difficult to decide where certain 

 aecial collections belong. Puccinia Douglasii however seems to 

 constantly inhabit acerose or narrow leaved species of Phlox and 

 the aecia do not change the form of the leaf so pronouncedly as 

 do the aecia of P. plumbaria. A portion of the type material was 

 submitted to Mr. Standley, who identifies the host as Phlox 

 diffusa. Puccinia Douglasii therefore is not at present known to 

 inhabit Phlox Douglasii. 



Puccinia Richardsonii Sydow, Monog. Ured. 1:317. 1902 



The Sydows described this species from material collected at 

 Helena, Montana, May, 1896, on Phlox Richard\sonii by F. D. 

 Kelsey, and issued by Ellis and Everhart in N. Am. Fungi ^ppi 

 under the name Puccinia Douglasii. The host is apparently 

 Phlox diapensioidcs Rydb. and the rust differs in no essential 

 character from P. Douglasii on Phlox diffusa except that the 

 spores average a little longer. 



Following is a list of the synonymy and hosts of 



