431c Wisconsin Academy of Sciences, Arts, and Letters. 
Microsphaera alni ludens Salm., 418 
Muhlenbergia foliosa, 421 
Mycosphaerella innumerella (Karst,), 
423 
Myrioconium comitatum Davis, 414 
Oakesia sessilifolia, 418, 422 
Onoclea Struthiopteris, 407 
Osmorrhiza Claytoni, 421 
Ovularia avicularis Pk., 414 
Ovularia pulchella (Ces.) Sacc., 421 
Ovularia rigidula De Lacr., 414 
Panax quinquefolium, 409 
Panicum miliaceum, 410 
Peridermium, 431 
Peronospora parasitica (Pers.) Fr., 
403 
Petasites palmatus, 417, 426 
Phacidium balsameae n. sp., 424 
Phacidium expansum n. sp., 424 
Phacidium planum n. sp., 424 
Phalaris arundinacea, 402 
Phleospora oxyacantliae (K. & S.) 
Wallr., 401 
Phleospora reticulata E. & E., 419 
Phyllachora, 403, 404, 418 
Phyllachora melicicola Speg., 418 
Phyllosticta bacteriospora Vuill., 425 
Phyllosticta cruenta (Fr.) Kx., 418 
Phyllosticta platanoidis Sacc., 425 
Picea canadensis, 431 
Piggotia vaccinii n. sp., 426 
Pinus Strobus, 424 
Piricularia grisea (Cke.) Sacc., 404 
Pirictdaria parasitica E. & E. ; 421 
Plasmopara humuli, M. & T., 399 
Platygloea eriophori (Bres.) Hoehn, 
410 
Poa tri flora, 423 
Polygala paucifolia, 411 
Polygala sanguinea, 427 
Polygonatum, 410 
Polygonatum biflorum, 422 
Polygonatum commutatum, 422 
Polygonum amphibium, 414 
Polygonum aviculare, 414, 415 
Polygonum cilinode, 414, 415, 416 
Polygonum convolvulus, 415 
Polygonum Muhlenbergii, 414, 415 
Polygonum Persicaria, 415 
Polygonum scandens,. 415 
Populus balsamifera, 401, 402, 404, 
414 
Populus grandidenta, 401 
Populus tremuloides, 401, 414, 425 
Potentilla palustris, 423 
Prenanthes alba, 430 
Psedera, 413 
Puccinia agropyri E. & E., 423 
Puccinia bardanae Cda., 431 
Puccinia canaliculata (Schw.) Lagh., 
430 
Puccinia cicutae Lasch, 430 
Puccinia elymi-impatientis Davis, 406 
Puccinia eriophori, Thuem., 423 
Puccinia graminis Pers., 406 
Puccinia impatientis Arth., 406 
Puccinia impatienti-elymi Arth., 406 
Puccinia limosae Magn., 402 
Puccinia menthae Pers., 406 
Puccinia montanensis E. & E., 430 
Puccinia perminuta Arth., 406 
Puccinia poarum Niels., 423 
Puccinia polygalae Paschke, 411 
Puccinia polygoni-amphibii Pers., 423 
Puccinia pyrolae Cke., 411 
Puccinia sessilis Schn., 402 
Puccinia stipae Arth., 422 
Pyrus Malus, 409 
Quercus bicolor, 427 
Ramularia alismatis Fautr., 419, 420- 
421 
Ramularia anomala Pk., 415 
Ramularia biflorae Magn,. 416 
Ramularia destructans Zinss., 409 
Ramularia diervillae Pk., 416 
Ramularia impatientis Pk., 421 
Ramularia ionophila Davis, 416 
Ramularia magnusiana (Sacc.) Lin- 
dau, 428 
Ramularia minax n. sp., 409 
Ramularia occidentals E. & E., 415 
Ramularia panacicola Zinss., 409 
Ramularia racemosa E. & M., 416 
Ramularia repens, E. & E., 428 
Ramularia rosea (Fckl.) Sacc., 421 
Ramularia rubicunda Bres., 416 
Ramularia rufomaculans Pk., 414, 415 
Ramularia sagittariae Bres., 421 
Ramularia umbrina Davis, 416 
Ramularia virgaureae Thuem., 421 
428 
Ranunculus rhomboideus, 408 
Ranunculus septentrionalis, 428 
Rhamnus alnifoli^,, 416 
Rhamnus cathartica, 416 
Rhus glabra, 421 
Rus typhina, 421 
Rhynchosporium alismatis (Oud.) n. 
comb., 420 
Rhynchosporium graminicola Heinsen, 
420 
Rhynchosporium secales (Oud.) n. 
comb., 420 
Ribes, 400 
Ribes americanum, 405 
Ribes cynosbati, 402, 411, 419 
Ribes gracile, 419 
Ribes oxyacanthoides, 419 
