306 



Mycologia 



spore inoculations and taken from infected plants of Solidago 

 bicolor, S. canadensis, S. chapmanii, S. juncea, S. multiradiata, 

 S. rugosa, S. sempervirens, and vS\ speciosa. The following 

 plants were inoculated: 3 Aster conspicuus, 2 A. cordifolius, 3 

 A. geyeri, 2 A. laevis, 5 A. macro phyllus, 1 A. paniculatus, 2 A. 

 pringlei, 1 A. undulatus, 1 Callistephus chinensis, 6 Chrysopsis 

 mariana, 2 Euthamia graminifolia, 3 Elephant opus tomentosus, 

 5 Solidago bicolor, 4 vS\ canadensis, 1 S. chapmanii, 1 S. erecta, 

 1 S. fistulosa, 1 6\ hispida, 10 S. juncea, 23 5\ multiradiata, 1 5. 

 neglecta, 8 5\ riddellii, 8 vS\ rugosa, 4 5\ serotina, 3 speciosa, 

 7 S. squarrosa, 1 Vernonia glauca, and 2 V. noveboracensis. Of 

 these plants, the following were infected, all bearing uredinia 

 and some telia : 4 Solidago canadensis, 1 >S\ hispida, J S. juncea, 

 18 S. multiradiata, 2 vS\ riddellii, 3 S. serotina, and 2 ,S\ speciosa. 

 No plants of species of Aster were infected. 



During 191 5 to 1918, three sets of inoculations were made 

 with urediniospores collected on Aster paniculatus near Harpers 

 Ferry, W. Va., and on A. longifolius near Takoma Park, D. C. 

 The following plants were inoculated: 1 Aster divaricatus, 1 A. 

 geyeri, 4 A. laevis, 1 A. longifolius, 4 A. macro phyllus, 1 A. 

 vimineus, 2 Solidago juncea, 1 5. rugosa, and 1 5\ serotina. 

 Only species of Aster became infected as follows: 2 A. laevis 

 and 2 A. macro phyllus. 



Two sets of inoculations were made on pine trees with sporidia 

 from the telia of Coleosporium solidaginis. The first was made 

 September 13, 1916, from telia collected by the writer on Soli- 

 dago rugosa (no infected plants of Aster present) near Takoma 

 Park, D. C, September 10. The following trees were inocu- 

 lated : 2 Pinus caribaea, 3 iP. contorta, 1 P. coulteri, 2 P. echinata, 

 1 P. edulis, 2 P. mayriana, 1 P. montana, 1 P. palustris, 1 P. 

 pungens, 2 P. rigida, 2 P. scopulorum, 2 P. serotina, and 2 P. 

 taeda. Of these trees the following were infected, bearing 

 pycnia on or about December 21, 1916, and aecia about March 

 23, 1917: 1 P. echinata, 2 P. rigida, 2 P. scopulorum, and 1 

 P. taeda. The second set of inoculations was made in part from 

 telia collected by the writer on Solidago canadensis near Chain 

 Bridge, Va., September 28, 1920, and in part from telia col- 



