| sorghum arundinaceum | Yes | species | eukaryota | plants | species | 91525 | click here |
| sorghum halepense | Yes | species | eukaryota | plants | species | 4560 | click here |
| sorghum versicolor | Yes | species | eukaryota | plants | species | 29704 | click here |
| spartium junceum | Yes | species | eukaryota | plants | species | 49843 | click here |
| spermacoce articularis | Yes | species | | | species | 1475012 | click here |
| spinacia oleracea | Yes | species | eukaryota | plants | species | 3562 | click here |
| spiraea japonica | Yes | species | eukaryota | plants | species | 309823 | click here |
| spiraea sp. | Yes | no rank | eukaryota | plants | species | 65567 | click here |
| spondias purpurea | Yes | species | eukaryota | plants | species | 341683 | click here |
| sporobolus indicus var. pyramidalis | Yes | varietas | eukaryota | plants | varietas | 391793 | click here |
| stachytarpheta cayennensis | Yes | species | eukaryota | plants | species | 39376 | click here |
| stachytarpheta jamaicensis | Yes | species | eukaryota | plants | species | 634377 | click here |
| stellaria media | Yes | species | eukaryota | plants | species | 13274 | click here |
| stevia rebaudiana | Yes | species | eukaryota | plants | species | 55670 | click here |
| streblus asper | Yes | species | eukaryota | plants | species | 648879 | click here |
| stylosanthes | Yes | | | plants | genus | 35627 | click here |
| stylosanthes guianensis | Yes | species | eukaryota | plants | species | 62615 | click here |
| suaeda aegyptiaca | Yes | species | eukaryota | plants | species | 224153 | click here |
| sus scrofa | Yes | species | eukaryota | mammals | species | 9823 | click here |
| sus scrofa domesticus | Yes | subspecies | eukaryota | mammals | subspecies | 9825 | click here |
| syagrus romanzoffiana | Yes | species | eukaryota | plants | species | 290277 | click here |
| syagrus schizophylla | Yes | species | eukaryota | plants | species | 485390 | click here |
| synedrella nodiflora | Yes | species | eukaryota | plants | species | 183085 | click here |
| syringa oblata | Yes | species | eukaryota | plants | species | 178762 | click here |
| syringa pubescens subsp. patula | Yes | species | eukaryota | plants | species | 150407 | click here |
| syringa reticulata | Yes | species | eukaryota | plants | species | 126367 | click here |
| syringa vulgaris | Yes | species | eukaryota | plants | species | 34270 | click here |
| tabebuia heterophylla | Yes | species | eukaryota | plants | species | 39382 | click here |
| tachycixius | Yes | | | invertebrates | genus | 166224 | click here |
| tagetes | Yes | | | plants | genus | 13707 | click here |
| tagetes erecta | Yes | species | eukaryota | plants | species | 13708 | click here |
| tagetes minuta | Yes | species | eukaryota | plants | species | 169607 | click here |
| tagetes patula | Yes | species | eukaryota | plants | species | 55843 | click here |
| tamarix aphylla | Yes | species | eukaryota | plants | species | 189786 | click here |
| tamarix chinensis | Yes | species | eukaryota | plants | species | 189791 | click here |
| taraxacum officinale | Yes | species | eukaryota | plants | species | 50225 | click here |
| taraxacum sp. | Yes | no rank | eukaryota | plants | species | 49744 | click here |
| tarenaya hassleriana | Yes | species | eukaryota | plants | species | 28532 | click here |
| taverniera cuneifolia | Yes | species | eukaryota | plants | species | 451732 | click here |
| tephrosia purpurea | Yes | species | eukaryota | plants | species | 228354 | click here |
| tephrosia purpurea subsp. apollinea | Yes | subspecies | | | subspecies | 1390541 | click here |
| thlaspi arvense | Yes | species | eukaryota | plants | species | 13288 | click here |
| thrinax radiata | Yes | species | eukaryota | plants | species | 115524 | click here |
| thuja | Yes | | | plants | genus | 3315 | click here |
| thunbergia erecta | Yes | species | eukaryota | plants | species | 76287 | click here |
| tilia platyphyllos | Yes | species | eukaryota | plants | species | 82423 | click here |
| toona | Yes | | | plants | genus | 67917 | click here |
| toona ciliata | Yes | species | eukaryota | plants | species | 67918 | click here |
| trachycarpus fortunei | Yes | species | eukaryota | plants | species | 14027 | click here |
| trachyspermum ammi | Yes | species | eukaryota | plants | species | 52570 | click here |
| tragopogon dubius | Yes | species | eukaryota | plants | species | 45322 | click here |
| trialeurodes vaporariorum | Yes | species | eukaryota | invertebrates | species | 88556 | click here |
| trichechus manatus | Yes | species | eukaryota | mammals | species | 9778 | click here |
| trichechus manatus latirostris | Yes | subspecies | eukaryota | mammals | subspecies | 127582 | click here |
| trichilia havanensis | Yes | species | | | species | 1130843 | click here |
| trichodesma zeylanicum | Yes | species | eukaryota | plants | species | 764744 | click here |
| trifolium | Yes | | | plants | genus | 3898 | click here |
| trifolium hybridum | Yes | species | eukaryota | plants | species | 74517 | click here |
| trifolium lupinaster | Yes | species | eukaryota | plants | species | 74519 | click here |
| trifolium pratense | Yes | species | eukaryota | plants | species | 57577 | click here |
| trifolium repens | Yes | species | eukaryota | plants | species | 3899 | click here |
| trillium erectum | Yes | species | eukaryota | plants | species | 50545 | click here |
| trillium grandiflorum | Yes | species | eukaryota | plants | species | 55186 | click here |
| tripleurospermum maritimum subsp. inodorum | Yes | subspecies | eukaryota | plants | subspecies | 99108 | click here |
| triticum aestivum | Yes | species | eukaryota | plants | species | 4565 | click here |
| triticum turgidum subsp. durum | Yes | subspecies | eukaryota | plants | subspecies | 4567 | click here |
| tylophora indica | Yes | species | eukaryota | plants | species | 63500 | click here |
| typhlocybinae | Yes | | | invertebrates | subfamily | 33371 | click here |
| ugni molinae | Yes | species | eukaryota | plants | species | 260145 | click here |
| ulmus | Yes | | | plants | genus | 24735 | click here |
| ulmus americana | Yes | species | eukaryota | plants | species | 29740 | click here |
| ulmus glabra | Yes | species | eukaryota | plants | species | 172265 | click here |
| ulmus laevis | Yes | species | eukaryota | plants | species | 233204 | click here |
| ulmus minor | Yes | species | eukaryota | plants | species | 262084 | click here |
| ulmus minor subsp. canescens | Yes | subspecies | eukaryota | plants | subspecies | 262085 | click here |
| ulmus parvifolia | Yes | species | eukaryota | plants | species | 63058 | click here |
| ulmus rubra | Yes | species | eukaryota | plants | species | 102693 | click here |
| unidentified | Yes | no rank | unclassified and other | unassigned | species | 32644 | click here |
| urochloa brizantha | Yes | species | eukaryota | plants | species | 240448 | click here |
| urochloa distachya | Yes | species | eukaryota | plants | species | 649769 | click here |
| urtica dioica | Yes | species | eukaryota | plants | species | 3501 | click here |
| vaccinium | Yes | | | plants | genus | 13749 | click here |
| vaccinium corymbosum | Yes | species | eukaryota | plants | species | 69266 | click here |
| vaccinium macrocarpon | Yes | species | eukaryota | plants | species | 13750 | click here |
| vaccinium myrtillus | Yes | species | eukaryota | plants | species | 180763 | click here |
| valeriana | Yes | | | plants | genus | 19952 | click here |
| vasconcellea cundinamarcensis | Yes | species | eukaryota | plants | species | 35926 | click here |
| veronica | Yes | | | plants | genus | 4173 | click here |
| veronica persica | Yes | species | eukaryota | plants | species | 138560 | click here |
| vicia faba | Yes | species | eukaryota | plants | species | 3906 | click here |
| vigna mungo | Yes | species | eukaryota | plants | species | 3915 | click here |
| vigna radiata | Yes | species | eukaryota | plants | species | 157791 | click here |
| vigna radiata var. radiata | Yes | varietas | eukaryota | plants | varietas | 3916 | click here |
| vigna unguiculata | Yes | species | eukaryota | plants | species | 3917 | click here |
| vigna unguiculata subsp. sesquipedalis | Yes | subspecies | eukaryota | plants | subspecies | 138955 | click here |
| vinca | Yes | | | plants | genus | 60092 | click here |
| viola arvensis | Yes | species | eukaryota | plants | species | 97415 | click here |
| viola tricolor | Yes | species | eukaryota | plants | species | 214053 | click here |
| vitex agnus-castus | Yes | no rank | eukaryota | plants | species | 54477 | click here |
| vitex altissima | Yes | species | eukaryota | plants | species | 549680 | click here |