INDEX 



673 



Paspalum membranaceum , 

 100 

 Muhlenbcrgii, 101 

 plenipilum, 14, 101 

 psammophilum, 100 

 pubescens, 14, ioo 

 setaceum, 100 



Pastinaca, 481 

 sativa, 481 



Paulownia, 552 



tomentosa, 552 



Pavonia hastata, 442 



Pedaliaceae, 566 



Pedicellaria pentaphylla, 350 



Pedicularis, 561 



canadensis, 22, 561 

 lanceolata, 22, 561 



Pellaea, 61 



atropurpurca, 61 



Peltandra, 213 

 virginica, 213 



Penthoraccae, 353 



Penthorum, 353 

 sedoides, 353 



Pentstemon, 551 

 Digitalis, 552 

 grandiflorus, 552 

 hirsutus, 552 

 pallidus, 17, 552 

 Pentstemon, 552 

 tubiflorus, 552 



Peramium, 257 



ophioides, 6, 257 

 pubescens, 21, 257 

 tesellatum, 6, 19, 257 



Perilla, 545 



frutescens, 545 



nankinensis, 545 



Periploca graeca, 513 



Persicaria, 291 



amphibia, 291 

 Careyi, 29, 292 

 Hydropiper, 293 

 hydropiperoides, 293 

 lapathifolia, 292 

 Muhlenbcrgii, 292 

 opelousana, 293 

 orientalis, 293 

 pennsylvanica, 292 

 Persicaria, 292 

 portoricensis, 15, 292 



Persicaria punctata, 293 



punctatum robustior, 293 



robustior, 293 



setacea, 293 

 Perularia, 248 



flava, 248 

 Petasites, 634 



palmata, 7, 20, 634 



Petasites, 634 

 Petrorhagia, 313 



Saxifraga, 313 

 Petunia, 548 



axillaris, 548 



parviflora, 548 



violacea, 548 

 Phacelia, 519 



dubia, 17, 520 



Purshii, 520 



viscida, 520 

 Phalaris, 119 



arundinacea, 1 19 



canadensis, 119 

 Phaseolus, 412 



polystachyus, 23, 412 



vulgaris, 412 

 Philadelphus, 356 



coronarius, 356 



inodorus, 356 



pubescens, 356 

 Philibertia gracilis, 513 

 Philotria, 89 



angustifolu, 90 



canadensis, 89 



Nuttallii, 89 

 Phleum, 125 



pratense, 125 

 Phlox, 517 



divaricata, 518 



maculata, 22, 517 



paniculata, 17, 517 



pilosa, 517 



subulata, 518 

 Phoradendron, 284 



flavescens, 15, 285 

 Phragmites, 135 



Phragmites, 135 

 Phryma, 567 



Leptostachya, 567 

 Phrymaceae, 567 

 Phyllanthus, 423 



carolinensis, 16, 423 



Physalis, 545 



Alkekengi, 546 



angulata, 546 



heterophylla, 546 

 ambigua, 546 

 nyctaginea, 546 



ixocarpa, 546 



peruviana, 546 



philadelphica, 546 



pruinosa, 546 



pubescens, 546 



subglabrata, 546 



virginiana, 546 



viscosa, 546 

 Physalodes, 545 



physalodes, 545 

 Physostegia, 532 

 Phytolacca, 302 



decandra, 302 

 Phytolaccaceae, 302 

 Picea, 72 



Abies, 73 



canadensis. 7.? 



Mariana, 72 



rubens, 73 

 Pirris, 642 



cchioides, 642 



hieracioides, 642 



hispida, 642 

 Pilca, 283 



pumila, 283 

 Pimpinella Saxifraga, 482 

 Pinaceae, 69 

 Pinus, 70 



echinata, 14, 26, 27, 71 



pungens, 14, 71 



resinosa, 5, 18, 70 



rigida, 27, 31, 71 



serotina, 14, 72 



Strobus, 70 



sylvestris, 72 



Taeda, 14, 72 



virginiana, 14, 27, 71 

 Pisum sativum, 413 

 Plantaginaceae, 567 

 Plantago, 567 



aristata, 568 



Coronopus, 569 



cordata, 568 



decipiens, 568 



elongata, 569 



