Peritoma, 989 



integrifolia, 988 



serrulatum, 988 



sonorae, 988 

 Persea, 961 



americana. 961 



Borbonia, 961 



palustris, 962 



pubescens, 962 

 Persian wiregrass, 814 

 Persicaria, 808 



bicornis, 823 



coccinea, 823 



densi flora, 826 



Hydropiper, 830 



hydropiperoides, 834 

 opelousana, 834 



lapathifoUa, 826 



Muhlenbergii, 823 



orientalis, 826 



pensylvanica, 820 



punctata, 826 



setacea, 834 



vulgaris, 830 

 Peridaria 



bidentata, 703 



scutellata, 703 

 Petunia, 1449, 1455 



axillaris, 1455 



parviflora, 1455 



seaside-, 1455 



violacea, 1455 



wild-, 1455 

 Phacelia, 1377 



heterophylla, 1377 



magellanica, 1377 

 Phalaris, 268 



angusta, 271 



arundinacea, 268 



caroliniana, 268 

 Pharbitis, 1354 



cat hart ica, 1355 

 Philadelphia fleabane, 1629 

 Philibertella cynanchoides, 



1350 

 Philoxerus, 868 



vermicularis, 868 

 Phleum, 240 



alpinum, 240 



pratense, 240 

 Phlox family, 1369 

 Phoenix, 556 

 PhoUurus incurvus, 218 

 Phragmites, 205 



communis, 205 

 Phyla, 1401 



cuneifolia, 1362, 1405 



incisa, 1404 



lanceolata, 1403 



nodiflora, 1405 



longifolia, 1405 

 reptans, 1405 



strigulosa, 1404 

 parviflora, 1404 

 sericea, 1404 



yucatana, 1404 

 Phyllanthus, 1082, 1365 



caroliniensis, 1083 



ericoides, 435 



pudens, 1083 

 Phylloglossum, 39 

 Physocarpus, 1016 



monogynus, 1016 

 Physostegia, 1362, 1422 



angustifolia, 1425 



Correllii, 1426 



Digitalis, 1426 



edwardsiana, 1425 



intermedia, 1425 



micrantha, 1425 



obovata, 1426 



praemorsa, 1425 



pulchella, 1426 



se retina, 1426 

 Phytolacca, 870 



americana, 870 



decandra, 870 



rigida, 870 

 Phytolaccaceae, 870 

 Piaropus crassipes, 598 

 Pickerel-weed, 4, 601 



family, 597 

 Pickle-weed, 839 

 Pigeon-bush, 1560 

 Pigeon grape, 1110 

 Pigmy 



saxifrage, 1002 



-weed, 994 

 water-, 994 

 Pignut hickory, 775 

 Pigweed, 853, 855, 858 



spiny-, 861 

 Pilea, 792 



pumila, 792 

 Deamii, 795 

 pumila, 795 

 Pillwort, 57 

 Pilostaxis 



nana, 1081 



ramosa, 1081 

 Pilularia, 57 



americana, 57 

 Pimpernel, 1291 



brook-, 1493 



false-, 1484 



scarlet-. 1291 



water-, 1277 

 Pin oak, 786 

 Pinguicula, 1522 



pumila, 5, 1522 



Pink 



family, 884 



grass-, 5 



mountain-, 1318 



-smartweed, 823 

 Pinkweed, 820 

 Pipewort, 5, 588 



family, 588 

 Pistia, 563 



Stratiotes, 3, 4, 563 

 Pitcher plant, 5, 990 



family, 990 

 Plains Cottonwood, 748 

 Plains ironweed, 1593 

 Plane-tree family, 1012 

 Planer-tree, 788, 1012 

 Planera, 788 



aquatica, 788 

 Plantaginaceae, 1533 

 Plantago, 109, 1365, 1533 



elongata, 1538 



eriopoda, 1534 



heterophylla, 1538 



hirtella 



Galeottiana, 1536 

 mollior, 1537 



hybrida, 1537 



insularis, 1536 

 fastigiata, 1536 



lanceolata, 1534 



major, 1536 



pusilla, 1538 



rhodosperma. 1537 



Rugelii, 1536 



virginica, 1537 

 viridescens, 1537 

 Plantain, 1533 



common-, 1536 



English-, 1534 



family, 1533 



Indian-, 1693 



pale-seeded-, 1537 



red-seeded-, 1537 



Robin's-, 1627 

 Platanaceae, 1012 

 Platanus, 1012 



occidentalis, 1015 

 attenuata, 1015 

 glabrata, 1015 



racemosa 



Wright a, 1015 



Wrightii, 1015 

 Pleurogyna rotata, 1327 

 Pluchea, 1367, 1633 



borealis, 1637 



camphorata, 1634 



foetida, 1634 



purpurascens, 1634 



rosea, 1634 



1764 



