Poinsettia 81 

 Poison ivy 84 

 Poison oak 84 

 Poison sumach 84 

 Polemoniaceae 134 

 Poncirus 78 

 Poplar 18, 41 

 Populus 18 

 Potato family 136 

 Potentilla 64 

 Prickly ash 79 

 Primavera 137 

 Primrose, Ev'ng 109 

 Prince's pine 113 

 Privet 131 

 Privet, Swamp 130 

 Prunus 67 

 Psedera 100 

 Pseudotsuga 7 

 Ptelea 78 

 Pteridophyta 3 

 Pterocarya 22 

 Puccinia 39, 97 

 Pueraria 77 

 Pussy willow 20 

 Pyracantha 62 

 Pyrola 114 

 Pyrolaceae 113 

 Pyrus 56 

 Pyxidanthera 124 

 Pyxie 124 



Quassia family 79 

 Quercus 29 

 Quince, 58 

 Quince, Japanese 58 

 Quinine 140 



INDEX 



Ramblers 66 

 Ranunculaceae 36 

 Raspberry 65 

 Red cedar 14 

 Red haw 60 

 Redbud 70 

 Redwood n 

 Retinispora 14 

 Retinospora 12, 14 

 Rhamnaceae 96 

 Rhamnus 97 

 Rhododendron 115 

 Khodora 115 

 Rhodotypos 62 

 Rhus 84 

 Ribes 50 

 Robinia 74 

 Rockrose family 105 

 Rosaceae 53 

 Rosa 66 

 Rose acacia 74 

 Rose mallow 103 

 Rose of Sharon 103 

 Rosemary, Bog 118 

 Rowan tree 57 

 Royal palm 18 

 Rubiaceae 139 

 Rubus 64 

 Rue family 77 

 Running myrtle 134 

 Russian olive 107 

 Rutaceae 77 



Sabal 17 



Saint Andrew's 



cross 105 

 Salicaceae 18 



175 



Saint John's wort 



104 

 Saint Peter's wort 



105 



Salix 19 

 Salt cedar 105 

 Salt tree 76 

 Sambucus 141 

 Sand myrtle 116 

 Sapindaceae 95 

 Sapindus 96 

 Sapodilla family 124 

 Sapotaceae 124 

 Sassafras 44 

 Savin 14 

 Saxifragaceae 45 

 Saxifrage family 45 

 Schizanthus 136 

 Schizophragma 48 

 Schmaltzia 84 

 Sciadopitys 10 

 Scrophulariaceae 137 

 Sea buckhorn 108 

 Securinega 8r 

 Sedum 45 

 Seed plants 4 

 Selaginella 3 

 Selaginellaceae 3 

 Senna, Bladder 75 

 Sequoia u 

 Serviceberry 60 

 Shadbush 60 

 Shagbark 23 

 Shepherdia 107 

 Shinleaf 114 

 Sibbaldia 63 

 Silene 35 



