Tabanus mendossai (synonymous, order Diptera)
Tabanus sudeticus (order Diptera)
Tabernemontana pachysiphon (order Gentianales)
Tacca chantrieri (order Dioscoreales)
Taiwania cryptomerioides (order Pinales)
Taiwania flousiana (synonymous, order Pinales)
Talbotia elegans (order Pandanales)
Talinum caffrum (order Caryophyllales)
Tamarix africana (order Caryophyllales)
Tamarix canariensis (order Caryophyllales)
Tamarix gallica (order Caryophyllales)
Tamarix nilotica (order Caryophyllales)
Tambourissa purpurea (order Laurales)
Tamus communis (synonymous, order Dioscoreales)
Tapes philippinarum (synonymous, order Veneroida)
Taphrina aurea (synonymous, order Taphrinales)
Taphrina deformans (order Taphrinales)
Taphrina populina (order Taphrinales)
Taphrina pruni (order Taphrinales)
Tapinella atrotomentosa (order Boletales)
Tapinella panuoides (order Boletales)
Taraxacum officinale (order Asterales)
Tarentola mauritanica (order Squamata)
Targionia hypophylla (order Marchantiales)
Tarzetta spurcata (order Pezizales)
Taxiphyllum barbieri (order Hypnales)
Taxodium ascendens (synonymous, order Pinales)
Taxodium distichum (order Pinales)
Taxus baccata (order Pinales)
Taxus canadensis (order Pinales)
Taxus cuspidata (order Pinales)
Taxus minor (synonymous, order Pinales)
Taxus procumbens (synonymous, order Pinales)
Tecoma capensis (order Lamiales)
Tecoma petersii (synonymous, order Lamiales)
Tecomaria capensis (synonymous, order Lamiales)
Tectarius coronatus (order Sorbeoconcha)
Tectus pyramis (order Vetigastropoda)
Telescopium telescopium (order Sorbeoconcha)
Tellina planata (order Veneroida)
Telmatoblechnum indicum (order Polypodiales)
Teloschistes chrysophthalmus (order Teloschistales)
Teloschistes flavicans (order Teloschistales)
Teloschistes perrugosus (order Teloschistales)
Temnostoma vespiforme (order Diptera)
Tenebrio molitor (order Coleoptera)
Tentyria laevis (order Coleoptera)
Tephrocactus articulatus (order Caryophyllales)
Tephromela atra (order Lecanorales)
Tephromela campestricola (order Lecanorales)
Terfezia arenaria (order Pezizales)
Terfezia claveryi (order Pezizales)
Terfezia fanfani (order Pezizales)
Terminalia catappa (order Myrtales)
Terminalia mantaly (order Myrtales)
Tettigonia viridissima (order Orthoptera)
Tetragnatha extensa (order Araneae)
Tetraselmis suecica (order Chlorodendrales)
Testudo graeca (order Testudines)
Tetradenia fruticosa (order Lamiales)
Teucrium capitatum (order Lamiales)
Teucrium fruticans (order Lamiales)
Teucrium pseudochamaepitys (order Lamiales)
Teucrium scordium (order Lamiales)
Teucrium scorodonia (order Lamiales)
Teucrium thymifolium (order Lamiales)
Thais haemastoma (synonymous, order Sorbeoconcha)
Thalictrum aquilegiifolium (order Ranunculales)
Thalictrum minus (order Ranunculales)
Thalictrum speciosissimum (order Ranunculales)
Thalictrum tuberosum (order Ranunculales)
Thalloidima albilabrum (order Lecanorales)
Thaumetopoea pityocampa (order Lepidoptera)
Thea vigintiduopunctata (synonymous, order Coleoptera)
Theba geminata (order Pulmonata)
Theba pisana (order Pulmonata)
Thelephora terrestris (order Thelephorales)
Thelopsis isiaca (order Ostropales)
Thelychiton speciosus (order Asparagales)
Thelypteris phegopteris (sunonymous, order Polypodiales)
Therion circumflexum (order Hymenoptera)
Thesium humifusum (order Santalales)
Thesium kilimandscharicum (order Santalales)
Thicuania moschata (synonymous, order Asparagales)
Thlaspi caerulescens (synonymous, order Brassicales)
Thlaspi perfoliatum (order Brassicales)
Threskiornis molucca (order Pelecaniformes)
Thrinax floridana (synonymous, order Arecales)
Thrinax radiata (order Arecales)
Thuidium abietinum (synonymous, order Hypnales)
Thuja occidentalis (order Pinales)
Thuja orientalis (synonymous, order Pinales)
Thuja plicata (order Pinales)
Thujopsis dolabrata (order Pinales)
Thyatira batis (order Lepidoptera)
Thymelaea hirsuta (order Malvales)
Thymelaea ruizii (order Malvales)
Thymus leptophyllus (order Lamiales)
Thymus piperella (order Lamiales)
Thymus richardii (order Lamiales)
Thymus serpylloides (order Lamiales)
Thyreonotus corsicus (order Orthoptera)
Thyropygus allevatus (order Spirostreptida)
Thysanozoon brocchii (order Polycladida)
Tillandsia aeranthos (order Poales)
Tillandsia bergerii (order Poales)
Tillandsia caput-medusae (order Poales)
Tillandsia fasciculata (order Poales)
Tillandsia fuschii (order Poales)
Tillandsia juncea (synonymous, order Poales)
Tillandsia juncifolia (order Poales)
Tillandsia reichenbachii (order Poales)
Tillandsia setacea (order Poales)
Tillandsia tricholepis (order Poales)
Tillandsia usneoides (order Poales)
Timarcha espanoli (order Coleoptera)
Timdalia intricata (order Acarosporales)
Tisonia ficulnea (order Malpighiales)
Titanoderma pustullatum (order Corallinales)
Todea barbara (order Osmundales)
Tofieldia calyculata (order Asterales)
Tolpis barbata (order Asterales)
Tolpis lagopoda (order Asterales)
Tolypella glomerata (order Charales)
Toninia cf. aromatica (order Lecanorales)
Toninia caeruleonigricans (synonymous, order Lecanorales)
Toninia candida (order Lecanorales)
Toninia physaroides (order Lecanorales)
Toninia sedifolia (order Lecanorales)
Toninia tristis (order Lecanorales)
Torilis nodosa (order Apiales)
Tornabea scutellifera (order Teloschistales)
Torreya nucifera (order Pinales)
Torreya taxifolia (order Pinales)
Tortella bambergeri (order Pottiales)
Tortella flavovirens (order Pottiales)
Tortella inclinata (order Pottiales)
Tortella tortuosa (order Pottiales)
Tortula atrovirens (order Pottiales)
Tortula lanceolata (synonymous, order Pottiales)
Tortula muralis (order Pottiales)
Tortula subulata (order Pottiales)
Trachelium caeruleum (order Asterales)
Trachemys scripta (order Testudines)
Trachyaretaon brueckneri (synonymous, order Phasmatodea)
Trachyaretaon carmelae (order Phasmatodea)
Trachyspora intrusa (order Pucciniales)
Trachystemon orientalis (order Boraginales)
Tradescantia pallida (order Commelinales)
Tragopogon porrifolius (order Asterales)
Trametes hirsuta (order Polyporales)
Trametes versicolor (order Polyporales)
Trapelia coarctata (order Trapeliales)
Trapeliopsis flexuosa (order Trapeliales)
Trebouxia decolorans (order Microthamniales)
Trebouxia hypogymniae (order Microthamniales)
Trebouxia impressa (order Microthamniales)
Trebouxia jamesii (order Microthamniales)
Tremella aurantia (synonymous, order Tremellales)
Tremella cetrariicola (order Tremellales)
Tremella christiansenii (order Tremellales)
Tremella coppinsii (order Tremellales)
Tremella flavoparmeliae (order Tremellales)
Tremella hypogymniae (order Tremellales)
Tremella macrobasidiata (order Tremellales)
Tremella parmeliarum (order Tremellales)
Tremella ramalinae (order Tremellales)
Tremella aff sarcographae (order Tremellales)
Tremella tuckerae (order Tremellales)
Trentepohlia umbrina (order Trentepohliales)
Tricharia cf. vainioi (order Ostropales)
Trichius fasciatus (order Coleoptera)
Trichodes aparius (order Coleoptera)
Trichodes leucopsideus (order Coleoptera)
Trichodes octopunctatus (order Coleoptera)
Tricholoma fracticum (order Agaricales)
Tricholoma myomyces (order Agaricales)
Trichosoma baetica (order Lepidoptera)
Trichostomopsis umbrosa (synonymous, order Pottiales)
Trichostomum brachydontium (order Pottiales)
Trichostomum crispulum (order Pottiales)
Trichostomum pallidisetum (synonymous, order Pottiales)
Trichostomum triumphans (order Pottiales)
Trifolium campestre (order Fabales)
Trifolium cherleri (order Fabales)
Trifolium pratense (order Fabales)
Trifolium repens (order Fabales)
Trifolium spumosum (order Fabales)
Trifolium tomentosum (order Fabales)
Trioza alacris (synonymous, order Hemiptera)
Tripneustes gratilla (order Temnopleuroida)
Trisetum flavescens (order Poales)
Trisetum paniceum (order Poales)
Trisopterus minutus (order Gadiformes)
Triticum x durum (order Poales)
Triturus alpestris (synonymous, order Caudata)
Triumfetta brachyceras (order Malvales)
Trivia monacha (order Sorbeoconcha)
Trochocochlea articulata (synonymous, order: Vetigastropoda)
Trochoidea elegans (order Pulmonata)
Trochus turbinatus (synonymous, order Vetigastropoda)
Tropidopola cylindrica (order Orthoptera)
Tropidothorax sternalis (order Hemiptera)
Tropinota squalida (order Coleoptera)
Truxalis nasuta (order Orthoptera)
Truxalis siamensis (order Orthoptera)
Truxaloides braziliensis (order Orthoptera)
Trypocopris pyrenaeus (order Coleoptera)
Tsebona macrantha (order Ericales)
Tsebona sp. (order Ericales)
Tsuga canadensis (order Pinales)
Tsuga diversifolia (order Pinales)
Tsuga heterophylla (order Pinales)
Tsuga mertensiana (order Pinales)
Tsuga sieboldii (order Pinales)
Tuber gennadii (order Pezizales)
Tuber lacunosum (synonymous, order Pezizales)
Tuber melanosporum (order Pezizales)
Tuberaria globulariifolia (synonymous, order Malvales)
Tuckermanella fendleri (order Lecanorales)
Tuckermanopsis chlorophylla (order Lecanorales)
Tulipa clusiana (order Liliales)
Tulipa australis (synonymous, order Liliales)
Tulipa sylvestris (order Liliales)
Tumicla sagenaria (order Lepidoptera)
Turbinaria conoides (order Fucales)
Turbinaria ornata (order Fucales)
Turbinicarpus zaragosae (order Caryophyllales)
Turbo argyrostomus (order Vetigastropoda)
Turbo chrysostomus (order Vetigastropoda)
Turdus merula (order Passeriformes)
Turraea geayi (order Sapindales)
Turritella communis (order Sorbeoconcha)
Turritella terebra (order Sorbeoconcha)
Turritella turbona (order Sorbeoconcha)
Typha latifolia (order Poales)
Typhaeus typhoeus (order Coleoptera)
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