Thalictrum minus
Lesser Meadow-rue
Thelypteris palustris
Marsh Fern
Thymus drucei
Wild Thyme
Tilia cordata
Small-leaved Lime
Tilia sp.
Lime
Tofieldia pusilla
Scottish Asphodel
Torilis japonica
Upright Hedge-parsley
Trichomanes speciosum
Killarney Fern
Trichophorum germanicum
Deergrass
Trifolium campestre
Hop Trefoil
Trifolium dubium
Lesser Trefoil
Trifolium medium
Zigzag Clover
Trifolium micranthum
Slender Trefoil
Trifolium scabrum
Rough Clover
Triglochin maritima
Sea Arrowgrass
Triglochin palustris
Marsh Arrowgrass
Trinia glauca
Honewort
Tripleurospermum inodorum
Scentless Mayweed
Tripleurospermum maritimum
Sea Mayweed
Tristagma uniflorum
Spring Starflower
Trocdaris verticillata
Whorled Caraway
Trollius europaeus
Globeflower
Tuberaria guttata
Spotted Rock-rose
Tussilago farfara
Colt's-foot