1903] CULTURES OF UREDINEAE 18 



less P. Purshii R. & S. and P. aristata Michx. I also have it in 

 my herbarium on P. virgi?iica from Illinois (Ellis and Everhart's 

 N. Amer. Fungi, no. 1829), on P. Purshii from Nebraska (Fungi 

 Columbiani, no. 1475), and on P. eriopoda Torr. from Montana, 

 collected by F. D. Kelsey. The aecidium has passed under the 

 name of A. Plantaginis Ces., but the identity with the European 

 form needs verification, although microscopically the two are 

 very similar. 



2. Puccinia Bartholomaei Diet. Again I am indebted to 

 Mr. W. H. Long, Jr., for material and suggestions leading to the 

 discovery of the aecidial connection of this host. Under date of 

 April 8, 1902, he wrote: "I have never found Puccinia vexa?is in 

 the state, although it is reported from Texas ; P. Bartholomaei I 

 have found, also its aecidial stage, which is Aecid. Jamesiamim on 

 Asclepiodora decumbens. I have never found this milkweed with 

 aecidia on it, that I did not find teleutospores of P. Bartholomaei 

 thickly covering the leaves of Bouteloua airtipendula around and 

 under the milkweed, and the teleutospores when examined had 

 germinated. Later the young grass in and near the bunches of 

 infected milkweed would first show the rust ; and where no teleu- 

 tospores were found under or near the milkweed no aecidia 

 were seen. This I observed repeatedly in my field work last 

 year." 



Mr. Long sent teleutospores on Atheropogon curtipe?idulus 

 Fourn. {Bouteloua curtipendula Torr.), which were sown on 

 Asclepias incarnata L. on May 2, giving rise to spermogonia May 

 8, and aecidia May 17. They were later sown with success on 

 the same host (culture dates, May 21, 28, and June 5), and on 

 Asclepias syriaca L. (culture dates, May 12, 18, and 26). They 

 were also sown at two different dates on Apocynum cannabinum, 

 with no infection. 



As the specific name of the aecidium is older than that of the 

 teleutosporic stage, the name of the fungus should become 

 Puccinia Jamesiana (Pk.), nom. nov. 



3. Aecidium Impatientis Schw. The aecidium on Impatiens, 

 and there appears to be but one, is very common throughout the 

 eastern United States. It often occurs in a locality in the great- 



