Sachalin Polygonum sachalinense Buckwheat Sage, White (see Mugwort, Western/ White Sage) Sage, Wood (see Germander/ Wood-Sage) Sandwort, Thyme-Leaved Arenaria serpyllifolia Pink Sapgum (see Sweetgum) Sarsaparilla, Wild Aralia nudicaulis Ginseng Sassafras Sassafras albidum Laurel Saxifrage, Early Saxifraga virginiensis Saxifrage Sedge, awl-fruited Carex sstipata Sedge Sedge, bur-reed Carex sparganoides Sedge Sedge, Cherokee (see Sedge, wolftail) Sedge, fox Carex sparganoides Sedge Sedge, Gray's (see Sedge, morning star) Sedge, greenwhite Carex albolutescens Sedge Sedge, Hop Carex lupulina Sedge Sedge, morning star Carex grayi Sedum (Orpine) Sedge, star Carex echinata Sedge Sedge, Umbrella Cyperus strigosus Sedge Sedge, wolftail Carex cherokeensis Sedge Sedum, dwarf white Sedum alba Sedum (Orpine) Seedbox Ludwigia alternifolia Evening Primrose Self Heal (see Heal-All) Senna, Wild Cassia hebecarpa Pea Serviceberry Amelanchier arborea Rose Shadbush (see Serviceberry) Sharp scales (see Pholiota, sharp-scaly) Sheepberry (see Nannyberry) Shepherd's Purse Capsella bursa-pastoris Mustard Shield-Fern, Marginal (see Woodfern, Marginal) Shield-Fern, Spinulose (see Woodfern, Spinulose) Shinleaf (see Pyrola, Round-Leaved/ Shinleaf) Silver Rod Solidago bicolor Goldenrod Silverbell, Carolina Halesia carolina Snowbell (Storax) Skullcap, Common (see Skullcap, Marsh) Skullcap, Downy Scutellaria incana Mint Skullcap, Heart-leaved Scutellaria ovata Mint Skullcap, Hooded (see Skullcap, Marsh) Skullcap, Mad-Dog Scutellaria leterifolia Mint Skullcap, Marsh Scutellaria epilobiifolia Mint Skullcap, smaller Scutellaria parvula Mint Skunk Cabbage Symplocarpus foetidus Arum/Calla Smartweed, Common (see Water Pepper, Common Smartweed) Smartweed, Long-Bristled Polygonum cespitosum Buckwheat Smartweed, Pale/ Pale Polygonum Polygonum lapathifolium Buckwheat Smartweed, Pennsylvania Polygonum pensylvanicum Buckwheat Snakeroot, Black Sanicula canadensis Parsley Snakeroot, long-fruited Sanicula trifolia Parsley Snakeroot, White Eupatorium rugosum Joe-Pye-Weed-Like Snapdragon, Dwarf/ Small Toadflax Linaria minor (chaenorrhinum minus) Snapdragon (Figwort) Sneezeweed Helenium autumnale Sunflower-Like Snowdrop Galanthus nivalis Amaryllis (Daffodil) Soapwort (see Bouncing Bet/ Soapwort) Solomon's Seal Polygonatum biflorum Lily Solomon's Seal, False Smilacena racemosa Lily Sorrel tree (see Sourwood) Sorrel, Common (see Sorrel, Sheep/ Common Sorrel) Sorrel, Sheep/ Common Sorrel Rumex acetosella Buckwheat Sourgrass (see Wood-Sorrel, Yellow/ Sour Grass) Sourwood Oxydendrum arboreum Heath Sow-Thistle, Common Sonchus oleraceus Dandelion-Like Sow-Thistle, Field Sonchus arvensis Dandelion-Like Sow-Thistle, Spiny-Leaved Sonchus asper Dandelion-Like Sowbane (see Goosefoot, Maple-Leaved) Spearmint Mentha spicata Mint Spearscale (see Orach) Speedwell, Bird's Eye Veronica chamaedrys Snapdragon (Figwort) Speedwell, Common Veronica officinalis Snapdragon (Figwort) Speedwell, Corn Veronica arvensis Snapdragon (Figwort) Speedwell, Field Veronica agrestis Snapdragon (Figwort) Speedwell, Persian/ Bird's Eye Veronica persica Snapdragon (Figwort) Speedwell, purslane Veronica peregrina Snapdragon (Figwort) Speedwell, Thyme-Leaved Veronica serpyllifolia Snapdragon (Figwort) Spicebush, common Lindera benzoin Laurel Spider-Flower Cleome spinosa Caper Spiderwort Tradescantia virginiana Spiderwort Spikenard Aralea racemosa Ginseng Spirea Rose Spleenwort, ebony Asplenium platyneuron Fern Spring Beauty Claytonia virginica Purslane Spring beauty, Carolina Claytonia caroliniana Purslane Spruce, Canada (see Spruce, White) Spruce, Colorado Blue Picea pungens Pine Spruce, Hemlock (see Hemlock, Eastern) Spruce, Norway Picea abies Pine Spruce, Skunk (see Spruce, White) Spruce, White Picea glauca Pine Spurge, Cyprus/ Graveyard Weed Euphorbia cyparissias Spurge Spurge, Flowering Euphorbia corollata Spurge Spurge, Toothed Euphorbia dentata Spurge Squaw-Weed (see Ragwort, Golden/ Squaw-Weed) Squawroot Donofolis americana Broomrape Squirrel-Corn Dicentra canadensis Poppy St. Johnswort, Common Hypericum perforatum St. Johnswort St. Johnswort, Dwarf Hypericum mutilum St. Johnswort St. Johnswort, Pale Hypericum ellipticum St. Johnswort St. Johnswort, Shrubby Hypericum spathulatum St. Johnswort St. Johnswort, Spotted Hypericum punctatum St. Johnswort Star of Bethlehem Ornithogalum umbellatum Lily Starflower Trientalis borealis Primrose Starwort (see Chickweed, Common/ Starwort) Starwort, Bog/ Marsh Chickweed Stellaria alsine Pink Steeplebush/ Hardhack Spirea tomentosa Rose Stickseed/ Beggar's-Lice Hackelia virginiana Forget-Me-Not/Borage Sticktights (see Beggar-ticks, Devil's/ Sticktights) Stinking Willie (see Wakerobin/ Red Trillium/ Stinking Willie/ Erect Trillium) Stitchwort, Lesser Stellaria graminea Pink Stitchwort, Long-Leaved (see Chickweed, Long-leaved/ Long Leaved Stitchwort) Stonecrop, Ditch Penthorum sedoides Sedum (Orpine) Stonecrop, stringy Sedum sarmentosum Sedum (Orpine) Stonecrop, Wild Sedum ternatum Sedum (Orpine) Strawberry, Indian Duchesnia indica Rose Strawberry, Wild Fragaria virginiana Rose Strawberry, Wood Fragaria vesca Rose Sugarberry (see Hackberry, American) Sulphur shell (see Chicken of the woods) Sumac, Smooth Rhus glabra Cashew (Sumac) Sumac, Staghorn Rhus typhina Cashew (Sumac) Sundrops Oenothera fruticosa Evening Primrose Sundrops, Small Oenothera perennis Evening Primrose Sunflower, Common Helianthus annuus Sunflower-Like Sunflower, False (see Ox-Eye/ False Sunflower) Sunflower, Giant (see Sunflower, Tall/ Giant Sunflower) Sunflower, Rough-Leaved Helianthus strumosus Sunflower-Like Sunflower, Small Wood Helianthus microcephalus Sunflower-Like Sunflower, Tall/ Giant Sunflower Helianthus giganteus Sunflower-Like Sunflower, Thin-Leaved Helianthis decapetalus Sunflower-Like Sunflower, Woodland Helianthus divaricatus Sunflower-Like Swamp candles (see Loosestrife, yellow) Sweet Everlasting (see Catfoot/Sweet Everlasting) Sweet William, Wild (see Phlox, Blue/ Wild Sweet William) Sweet William, Wild/ Meadow Phlox Phlox maculata Phlox Sweetgum Liquidambar styraciflua Witch-hazel Sycamore, American Platanus occidentalis Sycamore

Saxifrage Foamflower Tiarella cordifolia Saxifrage Gooseberry, prickly Ribes cynosbati Saxifrage Hydrangea, oakleaf Hyrangea quercifolia Saxifrage Hydrangea, Wild Hydrangea arborescens Saxifrage Miterwort/ Bishop's Cap Mitella diphylla Saxifrage Mock Orange, garden Philadelphus coronarius Saxifrage Saxifrage, Early Saxifraga virginiensis Sedge Bulrush, Great Scirpus validus Sedge Bulrush, Small/ Dark Green Bulrush Scirpus atrovirens Sedge Cyperus, shining Cyperus rivularis Sedge Hydrangea, panicle Hydrangea paniculata Sedge Sedge, awl-fruited Carex sstipata Sedge Sedge, bur-reed Carex sparganoides Sedge Sedge, Cherokee Sedge Sedge, fox Carex sparganoides Sedge Sedge, Gray's Sedge Sedge, greenwhite Carex albolutescens Sedge Sedge, Hop Carex lupulina Sedge Sedge, star Carex echinata Sedge Sedge, Umbrella Cyperus strigosus Sedge Sedge, wolftail Carex cherokeensis Sedge Wool Grass Scirpus pedicellatus Sedum (Orpine) Sedge, morning star Carex grayi Sedum (Orpine) Sedum, dwarf white Sedum alba Sedum (Orpine) Stonecrop, Ditch Penthorum sedoides Sedum (Orpine) Stonecrop, stringy Sedum sarmentosum Sedum (Orpine) Stonecrop, Wild Sedum ternatum Snapdragon (Figwort) Beardtongue, Foxglove Penstemon digitalis Snapdragon (Figwort) Beardtongue, Hairy/ Eastern Beardtongue Penstemon hirsutus Snapdragon (Figwort) Blue-eyed Mary Collinsia verna Snapdragon (Figwort) Butter-and-eggs/ Common Toadflax Linaria vulgaris Snapdragon (Figwort) Cow-wheat Melampyrum lineare Snapdragon (Figwort) Figwort Scrophularia marilandica Snapdragon (Figwort) Foxglove Digitalis purpurea Snapdragon (Figwort) Foxglove, Downy False Gerardia virginica Snapdragon (Figwort) Foxglove, Smooth False Gerardia laevigata Snapdragon (Figwort) Hedge-Hyssop, Clammy Gratiola neglecta Snapdragon (Figwort) Innocence Snapdragon (Figwort) Kenilworth-Ivy Cymbalaria muralis Snapdragon (Figwort) Monkey-Flower, Square-Stemmed Mimulus ringens Snapdragon (Figwort) Mullein, Common Verbascum thapsis Snapdragon (Figwort) Mullein, Moth Verbascum blatteria Snapdragon (Figwort) Neckweed Snapdragon (Figwort) Princess tree Paulownia tomentosa Snapdragon (Figwort) Snapdragon, Dwarf/ Small Toadflax Linaria minor (chaenorrhinum minus) Snapdragon (Figwort) Speedwell, Bird's Eye Veronica chamaedrys Snapdragon (Figwort) Speedwell, Common Veronica officinalis Snapdragon (Figwort) Speedwell, Corn Veronica arvensis Snapdragon (Figwort) Speedwell, Field Veronica agrestis Snapdragon (Figwort) Speedwell, Persian/ Bird's Eye Veronica persica Snapdragon (Figwort) Speedwell, purslane Veronica peregrina Snapdragon (Figwort) Speedwell, Thyme-Leaved Veronica serpyllifolia Snapdragon (Figwort) Turtlehead Chelone glabra Snowbell (Storax) Silverbell, Carolina Halesia carolina Soapberry Golden-Rain Tree Koelreuteria paniculata Spiderwort Dayflower, Asiatic/ Pale-flowered Dayflower Commelina communis Spiderwort Spiderwort Tradescantia virginiana Spurge Mercury, Three-Seeded Acalpha virginica Spurge Purslane, Milk Euphorbia supina Spurge Spurge, Cyprus/ Graveyard Weed Euphorbia cyparissias Spurge Spurge, Flowering Euphorbia corollata Spurge Spurge, Toothed Euphorbia dentata St. Johnswort St. Johnswort, Common Hypericum perforatum St. Johnswort St. Johnswort, Dwarf Hypericum mutilum St. Johnswort St. Johnswort, Pale Hypericum ellipticum St. Johnswort St. Johnswort, Shrubby Hypericum spathulatum St. Johnswort St. Johnswort, Spotted Hypericum punctatum Staff-Tree Bittersweet, American/ Climbing bittersweet Celastrus scandens Staff-Tree Bittersweet, Asiatic Celastrus orbiculatus Sycamore Sycamore, American Platanus occidentalis