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| scientific name | common name(s) | image gallery |
| Rhododendron arborescens | Smooth azalea Sweet azalea | |
| Rhus aromatica | Fragrant sumac Aromatic sumac Lemon sumac Polecat bush | |
| Rhododendron atlanticum | Coastal azalea Dwarf azalea | |
| Rhododendron austrinum | Orange azalea Florida azalea Yellow azalea | |
| Rhododendron calendulaceum | Flame azalea | |
| Rhododendron canescens | Mountain azalea Wild azalea Honeysuckle azalea Piedmont azalea Sweet azalea Hoary azalea Southern pinxterflower | |
| Rhododendron catawbiense | Catawba rosebay Purple rhododendron Red laurel Catawba rhododendron Mountain rosebay | |
| Rhus copallinum | Winged sumac Shining sumac Flameleaf sumac Mountain sumac Dwarf sumac | |
| Rhododendron flammeum | Piedmont azalea Oconee azalea | |
| Rhus glabra | Smooth sumac | |
| Rhododendron maximum | Great laurel Wild rhododendron Rosebay rhododendron White laurel Rosebay | |
| Rhododendron minus | Piedmont rhododendron Dwarf rhododendron Carolina laurel | |
| Rhododendron prunifolium | Plumleaf azalea | |
| Rhus typhina | Staghorn sumac Velvet sumac | |
| Robinia hispida | Bristly locust Standing sweet pea | |
| Rudbeckia hirta | Black-eyed Susan Common black-eyed Susan Brown-eyed Susan | |
| Rudbeckia laciniata | Cutleaf coneflower Green-head coneflower Cut-leaf coneflower | |
| Rudbeckia triloba | Browneyed Susan Brown-eyed-Susan Thin-leaved coneflower Three-lobed Rudbeckia | |
| Sassafras albidum | Sassafras | |
| Sabal minor | Dwarf palmetto Palmetto Bush palmetto | |
| Sambucus nigra ssp. canadensis | Common elderberry Black elder Mexican elderberry Common elder Elderberry Tapiro Sauco | |
| Sabal palmetto | Cabbage palmetto Cabbage palm | |
| Serenoa repens | Saw palmetto | |
| Sisyrinchium angustifolium | Narrowleaf blue-eyed grass Narrow-leaf blue-eyed-grass Bermuda blue-eyed grass Blue-eyed grass | |
| Silene virginica | Fire pink Scarlet catchfly | |
| Smilax smallii | Lanceleaf greenbrier Southern smilax Jacksonvine Jacksonbrier | |
| Styrax americanus | American snowbell American snowbells American silverbells Big-leaf snowbell Storax | |
| Styrax grandifolius | Bigleaf snowbell Bigleaf storax | |
| Stokesia laevis | Stokes aster | |
| Stewartia malacodendron | Silky camellia Virginia stewartia | |
| Stewartia ovata | Mountain camellia Mountain stewartia | |
| Staphylea trifolia | American bladdernut | |
| Symplocos tinctoria | Horsesugar Common sweetleaf Sweetleaf Yellowwood | |
| Taxodium distichum | Bald cypress Baldcypress Common bald cypress Southern bald cypress Deciduous cypress | |
| Thelypteris kunthii | Wood fern River fern Southern shield fern Kunth's maiden fern | |
| Thelypteris noveboracensis | New York fern Tapering fern | |
| Thelypteris palustris var. pubescens | Eastern marsh fern | |
| Thermopsis villosa | Carolina bushpea Aaron's rod Bush pea | |
| Tradescantia hirsuticaulis | Hairystem spiderwort Hairy-stem spiderwort Hairy-stemmed spiderwort | |
| Tradescantia virginiana | Virginia spiderwort Spider lily | |
| Tsuga canadensis | Eastern hemlock | |
| Vaccinium arboreum | Farkleberry Tree sparkleberry Sparkleberry | |
| Vaccinium corymbosum | Highbush blueberry | |
| Vaccinium darrowii | Darrow's blueberry Evergreen blueberry | |
| Vaccinium elliottii | Elliott's blueberry | |
| Vaccinium pallidum | Blue Ridge blueberry Early lowbush blueberry | |
| Vaccinium stamineum | Deerberry | |
| Vernonia noveboracensis | New York ironweed | |
| Viburnum acerifolium | Mapleleaf viburnum Maple-leaf viburnum Arrow-wood Maple-leaf arrow-wood | |
| Viburnum dentatum | Southern arrowwood | |
| scientific name | common name(s) | image gallery |