Plants with white flowers
 Stellaria longifolia (Long-Leaved Stitchwort) |
 Stellaria longipes (Long-Stalked Stitchwort) |
 Stellaria media (Common Chickweed) |
 Streptopus amplexifolius (Clasping-Leaved Twisted Stalk) |
 Symphoricarpos albus (Snowberry) |
 Symphoricarpos occidentalis (Buckbrush, Western Snowberry) |
 Symphyotrichum boreale (Rush Aster) |
 Symphyotrichum ciliatum (Rayless Aster) |
 Symphyotrichum ericoides (Many-Flowered Aster) |
 Symphyotrichum falcatum (White Prairie Aster) |
 Symphyotrichum lanceolatum (Willow Aster) |
 Thalictrum dasycarpum (Tall Meadow Rue) |
 Thalictrum venulosum (Veiny Meadow Rue) |
 Thlaspi arvense (Stinkweed) |
 Townsendia exscapa (Low Townsendia) |
 Townsendia hookeri (Hooker's Townsenia) |
 Toxicodendron rydbergii (Poison Ivy) |
 Toxicoscordion venenosum (Death Camas) |
 Triantha glutinosa (Sticky Asphodel) |
 Trientalis borealis (Starflower) |
 Triglochin maritima (Seaside Arrow Grass) |
 Trillium cernuum (Nodding Wakerobin) |
 Tripleurospermum inodorum (Scentless Chamomile) |
 Tripterocalyx micranthus (Sand Verbena) |
 Turritis glabra (Tower Mustard) |
 Vaccinium myrtilloides (Common Blueberry) |
 Vaccinium vitis-idaea (Lingonberry, Bog Cranberry) |
 Valeriana dioica (Northern Valerian) |
 Veronica peregrina (Hairy Speedwell) |
 Viburnum edule (Low Bush-Cranberry) |
 Viburnum opulus var. americanum (High Bush-Cranberry) |
 Viola blanda (Large-leaved White Violet) |
 Viola canadensis var. rugulosa (Western Canada Violet) |
 Viola macloskeyi (Northern White Violet) |
 Viola renifolia (Kidney-Leaved Violet) |