32 Department Circular 195, U. S. Dept. of Agriculture. 



548. P. phragmitis ( Schum. ) Koern.— 



Ill, on Phragmites com- 

 munis. 

 Near Anselm, N. Dak., Aug. 

 13, 1916, J. F. Brenckle. 



549. P. phragmitis (Schum.) Koern.— 



I, on Rheum rhaponticum. 

 Callaway, Nebr., June 2, 1902, 

 J. M. Bates. 



550. P. physalidis Pk.— in, on Phy- 



salis heterophylla. 

 Callaway, Nebr., July 17, 1902, 

 J. M. Bates. Dupl. F. Col. 1652. 



551. P. physalidis Pk.— Ill, on Phy- 



salis heterophylla. 

 Grand Island, Nebr., June 27, 

 1907. J. M. Bates. 



552. P. physalidis Pk.— Ill, on Phy- 



satis heterophylla. 

 Grand Island, Nebr., July 31, 

 1907, J. M. Bates. 



553. P. plumbaria Pk. — III, on Gilia 



gracilis. 

 Waitsburg, Wash., Apr. 5, 

 1900, R. M. Horner. 



554. P. plumbaria Pk. — III, on Phlox 



longifolia. 

 Salt Lake City, Utah, June 12, 

 1903, A. O. Garrett. 



555. P. plumbaria Pk. — I, on Phlox 



longifolia. 

 Fort Douglas, Utah, Apr. 28, 

 1918, J. F. Brenckle. 



556. P. plumbaria Pk. — III, on Phlox 



longifolia. 

 Fort Douglas, Utah, June 20, 

 1918, J. F. Brenckle. 



557. P. poarum Niels. — II, on Cata* 



brosa aquatica. 

 Centennial, Wyo., Aug. 16, 



1911, E. T. and E. Bartholomew. 



558. P. poarum Niels. — II, on Poa 



pratensis. 

 Bainbridge Island, Kitsap 

 County, Wash., Aug. 4, 1909, E. 

 and Mrs. E. Bartholomew. Dupl. 

 F. Col. 3175. 



559. P. poarum Niels. — II, on Poa pra- 



tensis. 

 Caldwell, Idaho, Sept. 30, 



1912, E. Bartholomew. Dupl. 

 N. A. Ured. 958. 



560. P. podophylli S. — I, on Podo- 



phyllum peltatum. 

 High Island, Md., Apr. 23, 

 1889, M. B. Waite. 



561. P. podophylli S — III, on Podo- 



phyllum peltatum. 

 New Brunswick, N. J., May, 

 1889, D. G. Fairchild. 



562. P. podophylli S.— Ill, on Podo- 



phyllum peltatum. 

 Louisiana (?), Apr. 8, 1890, 

 A. B. Langlois. 



563. P. podophylli S.— Ill, on Podo- 



phyllum peltatum. 

 Urmeyville, Ind., July 15, 1890, 

 E. M. Fisher. 



564. P. podophylli S— I, on Podo- 



phyllum peltatum. 

 St. Louis, Mo., Apr. 25, 1894, 

 C. H. Thompson. 



565. P. podophylli S— III, on Podo- 



phyllum peltatum. 

 St. Louis, Mo., May 19, 1894, 

 C. H. Thompson. 



566. P. podophylli S— I, on Podo- 



phyllum peltatum. 

 High Island, Md., Apr. 29, 

 1899, E. A. Bessey. 



567. P. podophylli S— I, on Podo- 



phyllum peltatum. 

 Glen Echo, Md., May 9, 1904, 

 V. K. Charles. 



568. P. podophylli S. — III, on Podo- 



phyllum peltatum. 

 Eldon, Mo., June 3, 1906 (?), 

 P. Spaulding. 



569. P. podophylli S — III, on Podo- 



phyllum peltatum. 

 Fairport, Iowa, June 4, 1913, 

 R. Coker (?). 



570. P. podophylli S. — III, on Podo- 



phyllum peltatum. 

 Ann Arbor, Mich., July 2, 

 1917, C. A. Ludwig. Dupl. N. A. 

 Ured. 1807. 



571. P. polygoni-amphibii P. — I, on 



Geranium maculatum. 

 Madison, Wis., May 24, 1911, 



E. T. Bartholomew. Dupl. N. A. 

 Ured. 3961. 



572. P. polygoni-amphibii P. — III, on 



Polygonum sp. 

 Sandcoulee, Mont, Sept., 1888, 



F. W. Anderson. 



