The following is a collective list of Allergenic plants with supporting information.

Plant Name  
Sparmannia africana (Indoor linden, African hemp) More Info
Spinacia oleracea (Spinach) More Info
Sporobolus cryptandrus (Sand dropseed) More Info
Sterculia apetala (Panama tree) More Info
Stillingia sylvatica (Queen's delight) More Info
Streptocarpus (Cape primroses) More Info
Suaeda californica (California Seablite, Broom seepweed) More Info
Suaeda maritima (Seablite, Herbaceous seepweed) More Info
Suaeda moquinii (Seablite, alkall) More Info
Syagrus romanzoffiana (Queen palm, Cocos plumosa) More Info
Syngonium podophyllum (Nephthytis) More Info
Syringa vulgaris (Common Lilac) More Info
Tagetes patula (French marigold) More Info
Tamarix aphylla (Athel tamarisk) More Info
Tamarix gallica (Salt cedar, French tamarisk) More Info
Tanecetum vulgare (Common Tansy) More Info
Taraxacum officinale (Common Dandelion) More Info
Taxodium ascendens (Pond cypress) More Info
Taxodium distichum (Southern bald cypress) More Info
Terminalia muelleri (Mueller's terminalia, Eandi) More Info
Tetrapanax papyriferus (Rice paper plant) More Info
Thevetia peruviana (Yellow oleander) More Info
Thuja occidentalis (White cedar, Eastern arborvitae) More Info
Thuja plicata (Western cedar, Western arborvitae) More Info
Thymus vulgaris (Thyme) More Info
Tilia americana (American linden, American basswood ) More Info
Tilia cordata (Small-leaf linden, lime) More Info
Toxicodendron pubescens (Poison oak) More Info
Toxicodendron radicans (Poison ivy) More Info
Toxicodendron vernix (Poison sumac, Poison ash, Poison elder) More Info
Tradecantia pallida (Purple queen, Purple heart) More Info
Tragia (Noseburn) More Info
Trifolium pratense (Red clover) More Info
Trifolium repens (White clover) More Info
Triticum aestivum (Cultivated bread wheat) More Info
Tropaeolum majus (Nasturtium) More Info
Tsuga canadensis (Eastern hemlock) More Info
Tsuga heterophylla (Western hemlock) More Info
Tsuga mertensiana (Mountain hemlock) More Info
Tulipa (Tulips) More Info
Typha (Cattails) More Info
Typha angustifolia (Narrow leaf cattail) More Info
Typha latifolia (Broad leaf cattail, Common Cattail) More Info
Ulmus alata (Winged elm) More Info
Ulmus americana (American elm, White elm) More Info
Ulmus crassifolia (Cedar elm) More Info
Ulmus parvifolia (Chinese elm) More Info
Ulmus pumila (Siberian elm) More Info
Ulmus rubra (Slippery elm) More Info
Urochloa mutica (Para) More Info
Urtica dioica (Stinging nettle) More Info
Vanilla planifolia (Vanilla) More Info
Vernicia fordii (Tung oil tree) More Info
Vinca (Periwinkle) More Info
Vitex trifolia (Vitex) More Info
Xanthium spinosum (Spiny cocklebur) More Info
Xanthium strumarium (Cockleburs) More Info
Xanthosoma sagittifolium (Malanga, Elephant ear) More Info
Xanthosoma violaceum (Malanga, Purple elephant ear) More Info
Zantedeschia (Calla lilies) More Info
Zea mays (Corn, Maize) More Info

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