Part 1, 1922] 
Plantago major 
P. plantaginella, 37 
Platanus sp. 
P. Platani, 70 
Podophyllum peltatum 
P. Podophylli, 29 
Polygonatum bifloram 
P. Convallariae, 11 
Polygonatum commutatum 
P. Convallariae, 11 
Polygonatum sp. 
P. Convallariae, 11 
Polygonum Fagopyrum see 
Fagopyrum Fagopyrum 
Populus alba 
P. Alcides, 46 
Populus angustifolia 
P. brunnea, 70 
Populus deltoides 
P. intermixta, 47 
_ P. maculans, 26 
Populus monilifera see 
Populus deltoides 
Populus tremuloides 
P. maculans, 26 
Populus trichocarpa | 
P. Alcides, 46 
Populus sp. 
P. brunnea, 70 
Prosopis juliflora 
P. juliflora, 23 
Prunella vulgaris 
P. Brunellae, 63 
Prunus americana 
P. circumscissa, 46 
P, virginiana, 70 
Prunus demissa see 
Padus melanocarpa 
Prunus Laurocerasus see 
Laurocerasus Laurocerasus 
Prunus nana see 
Padus nana 
Prunus Persica see 
Amygdalus Persica 
Prunus serotina see 
Padus virginiana 
Prunus irifiora 
P. congesta, 40 
Prunus virginiana see. 
Padus virginiana 
Prunus sp. 
P. circumscissa, 46 
P. congesta, 40 
Pyrola americana 
'P. Pyrolae, 29 
Pyrola rotundifolia see 
Pyrola americana 
Pyrus arbutifolia see 
Aronia arbutifolia 
Pyrus communis 
P. Pyrorum, 27 
Pyrus coronaria see 
Malus coronaria 
Pyrus ioensis see 
Malus ioensis 
Pyrus Malus see 
Malus Malus 
Pyrus sp. 
P. Pyrorum, 27 
PHYLLOSTICTACEAE 81 
Quercus agrifolia 
P. agrifolia, 50 
Quercus alba 
P. phomiformis, 17 
P. tumoricola, 24 
Quercus aquatica see 
Quercus nigra 
Quercus brevifolia 
P. vesicatoria, 66 
Quercus cinerea see 
Quercus brevifolia 
Quercus chrysolepis 
P., agrifolia, 50 
Quercus Douglasii 
P. livida, 67 
Quercus macrocarpa 
P. livida, 67 
P. phomiformis, 17 
P. Quercus, 23 
Quercus nigra 
P. livida, 67 
P. ludoviciana, 51 
Quercus obtusiloba see 
Quercus stellata 
Quercus Prinus 
P. phomiformis, 17 
P. Quercus-Prini, 47 
Quercus stellata 
P. phomiformis, 17 
Quercus virens see 
Quercus virginiana 
Quercus virginiana 
P. Quercus-Llicis, 66 
P. virens, 51 
Quercus Wislizeni 
P. Wislizeni, 22 
Quercus sp. 
P, phomiformis, 17 
Rhexia ciliosa 
P. Rhexiae, 62 
Rhododendron catawbiensis 
P. maxima, 17 
Rhododendron maximum 
P. maxima, 17 
Rhododendron nudiflorum 
P. maxima, 17 
Rhododendron sp. 
P. Saceardoi, 72 
Rhus Toxicodendron see 
Toxicodendron Toxicodendron 
Ribes amesicanum 
P. Grossulariae, 48 
Ribes divaricatum see 
Grossularia divaricata 
Ribes floridum see 
Ribes americanum 
Ribes missouriense see 
Grossularia missouriensis 
Ribes sp. 
P. Ellisii, 18 
P. Grossulariae, 48 
pRichardia scabra 
P. Richardsoniae, 65 
Richardsonia scabra see 
Richardia scabra 
Rosa sp. 
P. erratica, 39 
Rubacer odoratus 
P. variabilis, 49 
