113 



Western, 192 1, 98; A New Weed 



from, 86 

 Orontium aquaticum, 105 

 Ortheziola Vejdovskyi, 6 

 Oscillatoria prolifica, 12 

 Osmunda cinnamomea, 59 

 Ostrya virginiana, 63 

 Otis, Rev. J. P., 95 

 Overholtz, L. O., 14 

 Oxalis violacea, 100 



Packard, Winthrop, 55 



Panax trifolium, 24 



Panicularia longifolium, 44; pallida 



Fernaldii, 44 

 Panicum auburne, 44; commutatum, 



44; digitarioides, 105; villosissi- 



mum, 44 

 Papaver Rhoeas, 16, 99;somniferum, 



99 



Patterson, Miss Nancy, 9 



Paulownia tomentosa, 33 



Pease, A. S., 88 



Peck, M. E., 87, 100 



Pediastrum, 14 



Pedicellaria pentaphylla, 3 



Pedicularia canadensis, 25, 39, 42 



Peltiphyllum peltatum, lOi 



Pennell, Francis W., 34, 43, 53, 55, 

 100; Some Overlooked Schophu- 

 lariaceae of Rafinesque, 77 



Penstemon'aggregatus, 100; hirsutus, 

 27 



Peramium pubescens, 13 



Persicaria, 11 ; amphibia, 46; persi- 

 carioides, 3; setacea, 46 



Petry, Loren C, 32 



Pfeiffer, Norma E., 99 



Phaenological Study in New England, 

 A, 19 



Phaseolus polystachyus, 43, 47 



Philadelphus coronarius, 2 



Picea Abies, 62 



Pinguicula pumila, 59 



Pinus glabra, 10; Laricio, 63; pin- 

 aster, 9 ; serotina, 60; Thunbergii, 69 



Pistillody and Staminody in the 

 Plum, 28 



Plant Material, Treleasc, review, 88 



Pleistocene Plants, Additional Occur- 

 rences of, 10 



Pleuropterus Zuccarinii, 3 



Pogonia ophioglossoides, 60 



Polygala lutea, 47; paucifolia, 24 



Polygonatum biflorum, 55; com- 

 mutatum, 25 



Polygonum buxiforme, 46 



Polystichum, 12; angustidens, 12; 

 formosum, 12 



Pontederia cordata angustifolia, 105 

 Populus candicans, 3 ; deltoides, 3, 62 ; 



grandidentata, 63 

 Porsild, Morton P., The Flora of 



(jreenland, S3 

 Porterfield, Willard M., 53 

 Porto Santo, Flora of, 4 

 Potentilla canadensis, 25, loi; pro- 



cumbens, 107; pumila, 38 

 Potamogeton filiformis, 67; natans, 



44 

 Povah, Alfred H. W., 31 

 Pretz, Harold W., 91 

 Pribilof Island, Additions to the 



Flora of, 67 

 Proceedings of the Club, 12, 31, 52, 



68, 106 

 Prosopis, 9 



Prunella vulgaris, 27, 39 

 Prunus, 62; americana, 2; cuneata, 



47; Mahaleb, 2; pennsylvanica. 47; 



serotina, 63; trifida, 28; virginiana, 



62 

 Ptelea trifoliata, 2 

 Puccinia Gentianae, 30 

 Pucciniosira Brickelliae, 30 

 Pyramis indica occidentalis, 9 

 Pyrola elliptica, 27 



Quercus alba, 62; rubra, 63 



Rafinesque, Some Overlooked Scro- 



phulariaceae of, "jf 

 Ranapalus rotundifolius, 79 

 Ranunculus abortivus, 23; acris, 25; 



septentrionalis, 25 

 Rau, E. A., 96 

 Records for Limnobium Spongia in 



the Northern United States, 102 

 Remarks on a Collection of Chinese 



Algae, 14 

 Reviews, 51, 88, 106 

 Rhacophilopsis Pechuelii, 12 

 Rhexia Alifanus, 60 

 Rhodora canadensis, 25 

 Rhus hirta, 47; Vernix, 59 

 Ribes, 32 

 Richards, H. M., Some Impressions 



of Japanese Vegetation, 68 

 Ritchie, Johh W., 31 

 Robertiella Robertiana, 47 

 Rogers, Walter E., Ice Storms and 



Trees, 61 

 Roripa austriaca, 73 

 Rosa multiflora, 106 

 Rossiter, Frank H., 14 

 Rotula ramosior, 47 

 Rounds, Eda M., 52 



