31 



Oleaster, 17 

 Opuntia, 17 

 Orange, Mock-, 5 

 Orixa. 13 

 Osmanthus, 22 

 Osmarea, 22 

 Osmaronia, 10 



Pachistima, 15 

 Pachysandra, 14 

 Paederia, 24 

 Paeonia, 3 

 Paliurus, 15 

 Parrotia, 6 

 Parrotiopsis, 6 

 Parthenocissus, 16 

 Partridge-Berry, 24 

 Peony, Tree, 3 

 Pcriploca, 23 

 Periwinkle, 23 

 Pernettya, 21 

 Perovskia, 24 

 Pettcria, 13 

 Philadelphus, 5 

 Phlomis, 24 

 Phoenix-Tree, 16 

 Photinia, 10 

 Phyllostachys, 28 

 Physocarpus, 6 

 Picrasma, 13 

 Pieris, 21 

 Piptanthus, 13 

 Pinxter-Flower, 20 

 Pistacia, 14 

 Platycarya, 2 

 Pleiobastus, 27 

 Plum, 10 

 Poison Ivy, 14 

 Poison Sumac. 14 

 Polygonum, 2 

 Poncirus, 13 

 Potentilla, 6 

 Prickly Pear, 17 

 Prinsepia, 10 

 Privet, 22 

 Prunus, 10 



Pseudosasa. 28 

 Ptelea, 13 

 Pterostyrax, 21 

 Pueraria, 13 

 Pyracantha, 10 

 Pyxidanthera, 21 

 Pyxic, 21 



Quercus, 2 



Quince, Japanese, 10 



Rhamnella, 15 

 Rhamnus, 15 

 Rhododendron, 21 

 Rhodora, 20 

 Rhodotypus, 6 

 Rhus, 14 

 Kibes, 5 

 Robinia, 13 

 Rock-Rose, 17 

 Rosa, 8 

 Rose, 8 



Rose-of-Sharon, 16 

 Rubus, 9 

 Rue, 13 

 Ruta, 13 



Sage, 24 

 Sagerctia. 16 

 St. John's-Wort, 17 

 St. Peter's-Wort, 16 

 Salix, 2 

 Salvia, 24 

 Sambucus, 26 

 Santolina, 27 

 Sapindus, 15 

 Sapium, 13 

 Sarcococca, 14 

 Sasa, 28 

 Satureja, 24 

 Savory. 24 

 Schisandra, 4 

 Schizophragma, 6 

 Sea-Buckthorn, 17 

 Sccurincga, 13 

 Sedum, 4 



Semiarundinaria, 27 

 Senna, Bladder, 11 

 Shadbush, 9 

 Sheep-Laurel, 20 

 Shcpherdia, 17 

 Sibiraea, 9 

 Silk- Vine, 23 

 Silver-Bell, 21 

 Silver-Vine, 16 

 Sinomenium, 4 

 Sinowilsonia, 6 

 Skimmia, 13 

 Smilax, 28 

 Smoke-Tree, 14 

 Snowball, 27 

 Snowberry, 26 

 Soapberry, 15 

 Solarium, 24 

 Sophora, 13 

 Sorbaria, 9 

 Sorbaronia, 9 

 Sorbus, 10 

 Spartium, 13 

 Spice-Bush, 4 

 Spindle-Tree, 15 

 Spiraea, 9 

 Stachyurus, 17 

 Staphylea, 15 

 Stcphanandra. 9 

 Stewartia, 16 

 Stranvaesia, 9 

 Styrax, 21 

 Sumac, 14 

 Sun-Rose, 17 

 Sweet Bay, 4 

 Sweetbrier, 8 

 Sweet-Fern, 2 

 Sweet-Gale, 2 

 Sweetleaf, 21 

 Sweet Pepperbush, 20 

 Sweet- Shrub, 4 

 Symphoricarpos, 26 

 Symplocos, 21 

 Syringa, 22 



Tamarisk, 17 



