R Redbay 73 Redbud, eastern 88 Redcedar, eastern 27 Redgum 76 Rhus copallina 94 Robinia pseudoacacia 91 Rusty blackhaw 121 S Sabal minor 123 Sabal texana 123 Salix nigra 37 Sapindus drummondii 102 Sassafras 74 Sassafras albidum 74 Shepherdia argentea 129 Siberian elm 129 Silverbell, two-wing 112 Sloe, black 81 Smoketree, American 125 Snowdrop tree 112 Soapberry, western 102 Soapbush 124 Soap plant, Indian 102 Sophora affinis 124 Sparkleberry tree 108 Sugarberry 67 Sumac, shining, dwarf, flameleaf 94 Sumac, poison 95 Swampbay 71 Sweetbay magnolia 71 Sweetgum 76 Sweetleaf, common 111 Sycamore, American 77 Symplocos tinctoria 111