INDEX. 



769 



Potentilla arguta Pursh, 390 

 canadensis L., 31, 363, 391 

 effusa Doug]., 569 583 

 hippiaua Lehtn., 191 

 leucocarpa Rydberg, 30, 583 

 monspeliensis L., 30, 390, 583, 



626 



Nicolletii (Wats.) Sheldon, 30, 31 

 pennsylvauica strigosa Pursh, 553, 



583 



pentandra Engeltn., 31 



supitia var. Nicolletii Wats., 31 

 Prenanthcs, 546 

 Pritnulaceae, 400, 589 

 Protococcaceie, 198 

 Protococcus, 195, 617 

 Protomyces, 199 

 Prunella vulgaris L-, 363, 404 

 Prunus, 429 



amcricana Marsh, 363, 392, 584 



nigra Ait., 363, 368, 392 



pumila I,., 549 



serotina Ehrh., 363, 392, 584 



virginiana L , 363, 366, 392 

 Psoralea argophylla Pursh, 543, 584 

 Ptelea trifoliata Linn., 75, 84, 87, in, 



130, 131, 132, 133 

 Pteridophyta, 369 

 Pteris aquiliua L., 363, 366, 371 

 Pterygophora californica Ruprecht, 723 

 Ptilidium ciliare (L. ) Nees, 193 

 Puccinellia airoides (Nutt. ) Wats. & 



Coult., 569, 574 

 Puccinia Persoon, 537, 543, 545, 551,552 



adoxse Hedw., 544 



aegra Grove, 640 



alpina Fckl., 640 



amorph(Z Curt, 544, 552 



anemones-virginianae, 537 



angustata Peck, 546 



argentata (Schultz) Wiut., 549 



asteris Duby, 550 



calthse Lk., 544 



caricis (Schuui.) Rebent, 546 



Chondrillse Corda, 546 



circiese Pers. , 550 



convolvuli (P.) Cast., 544 



deglubens, 552 



densa D. & H., 633, 639 



effusa D. & H., 639 



elytni \Yestd., 552 



Puccinia 



emaculata Schwcin., 550 

 Fergussoni Berk. & Br., 639, 640 

 Fergussoni hastattr DeT., 633 

 galii (P.) Schwein., 544 

 gentians (Strauss) L,k., 544 

 graininis Pers., 548 

 grossulariae (Gm.) Wint., 541 

 halenire Arth. & Holway, 551 

 hastatcs Cooke, 633, 637, 638 

 hieracii (Schutn. ) Mart., 543, 548 

 hydrophylli Peck & Clint., 551 

 kuhniae Schwein., 549 

 Mariae-Wilsoni Clinton, 639 

 menthse americana Burrill, 545 

 mesomegala B. & C., 551 

 nardosmiae E. & E., 551 

 ornata Arth. & Holw., 550 

 peckiana Howe, 552 

 petalostemonis Farlow, 552 

 phragmitis (Schum. ) Korn, 547 

 pimpinellae (Strauss) Link, 544 

 poculiformis (Jacq. ) Wett., 548 

 podophylli Schwein., 549 

 polygoni-amphibii P., 549 

 porphyrogenita Curt., 551 

 pruni-spinosae Pers., 549 

 rhamni (P.) Wettst., 547 

 rubigo-vera (DC.) Wint., 548 

 Schceleriana Plow, et Magn., 556 

 sorghi Schwein., 550 

 tanaceti DC., 545 

 taraxaci Plowright, 548 

 thalictri Chev., 550 

 tiarellae B. & C., 551 

 totnipara Trel., 549 

 variolans Hark., 550 

 violae (Schum.) DC., 544, 631, 633, 



640 



Violarum Link., 633 

 xanthii Schwein., 551 



Pucciniaceae, 537, 540 



Pucciniopsis, 543, 549 



Pulsatilla hirsutissima( Pursh) Britton, 



367, 387 



Pylaisia heteromalla Sch., 48 

 polyantha Sch., 48 



Pylaisiellse, 36 



Pyrenopsis, 282 



melambola Tuck., 280, 313 

 phaeococca Trek., 280, 313 



