| Family |
Taxon |
Common Name | Photographs |
| Salicaceae |
Salix myricoides Muhl. |
bayberry willow |
|
| Caprifoliaceae |
Sambucus canadensis L. var. canadensis |
American elder, elderberry |
|
| Papaveraceae |
Sanguinaria canadensis L. |
bloodroot |
|
| Poaceae |
Schizachne purpurascens (Torr.) Swallen |
false melic grass |
|
| Cyperaceae |
Scirpus cyperinus (L.) Kunth |
wool-grass |
|
| Brassicaceae |
Sinapis arvensis L. |
California rape, charlock mustard |
|
| Asteraceae |
Solidago canadensis L. |
Canadian goldenrod, common goldenrod |
|
| Asteraceae |
Solidago canadensis L. var. scabra Torr. & A.Gray |
Canadian goldenrod, common goldenrod, tall goldenrod |
|
| Asteraceae |
Solidago flexicaulis L. |
broad-leaved goldenrod, zigzag goldenrod |
|
| Asteraceae |
Solidago gigantea Aiton |
giant goldenrod, late goldenrod, smooth goldenrod |
|
| Asteraceae |
Solidago juncea Aiton |
early goldenrod |
|
| Sparganiaceae |
Sparganium emersum Rehmann |
narrow-leaved bur-reed |
|
| Orchidaceae |
Spiranthes romanzoffiana Cham. |
hooded lady's-tresses |
|
| Lemnaceae |
Spirodela polyrrhiza (L.) Schleid. |
giant duckweed, greater duckweed |
|
| Lamiaceae |
Stachys tenuifolia Willd. var. tenuifolia |
narrow-leaved hedge-nettle, smooth hedge-nettle |
|
| Caryophyllaceae |
Stellaria graminea L. |
common stitchwort, grass-like starwort, starwort |
|
| Taxaceae |
Taxus canadensis Marshall |
American yew, Canadian yew, ground-hemlock |
|
| Brassicaceae |
Thlaspi arvense L. |
field pennycress |
|
| Cupressaceae |
Thuja occidentalis L. |
eastern arborvitae, northern white-cedar |
|
| Tiliaceae |
Tilia americana L. var. americana |
American basswood, American linden, basswood |
|
| Liliaceae |
Trillium cernuum L. |
nodding trillium, whip-poor-will flower |
|
| Pinaceae |
Tsuga canadensis (L.) Carrière |
eastern hemlock, hemlock, northern hemlock |
|
| Ulmaceae |
Ulmus thomasii Sarg. |
rock elm |
|
| Urticaceae |
Urtica dioica L. subsp. gracilis (Aiton) Selander |
stinging nettle |
|
| Ericaceae |
Vaccinium oxycoccos L. |
small cranberry |
|
| Scrophulariaceae |
Veronica serpyllifolia L. |
thyme-leaved speedwell |
|
| Scrophulariaceae |
Veronica serpyllifolia L. subsp. serpyllifolia |
thyme-leaved speedwell |
|
| Caprifoliaceae |
Viburnum lentago L. |
nannyberry, sheepberry |
|
| Fabaceae |
Vicia cracca L. |
bird vetch, cow vetch |
|
| Fabaceae |
Vicia cracca L. subsp. cracca |
bird vetch, cow vetch |
|
| Violaceae |
Viola blanda Willd. var. palustriformis A.Gray |
sweet white violet |
|
| Violaceae |
Viola odorata L. |
sweet violet |
|
| Violaceae |
Viola sororia Willd. |
door-yard violet, common blue violet, hairy wood violet |
|