| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| TRACH5 | Trachycystis Lindb. | trachycystis moss | Mniaceae
|
| TRVE5 | Trachylobium verrucosum (Gaertner) Oliver | Hymenaea verrucosa | Fabaceae
|
| TRDI10 | Trachynia distachya (L.) Link | Brachypodium distachyon | Poaceae
|
| TRMO | Trachypogon montufari auct. non (Kunze) Nees | Trachypogon spicatus | Poaceae
|
| TRRU4 | Trachypogon rufus Nees | Hyparrhenia rufa | Poaceae
|
| TRSE | Trachypogon secundus (J. Presl) Scribn. | Trachypogon spicatus | Poaceae
|
| TRSP12 | Trachypogon spicatus (L.) Kuntze | spiked crinkleawn | Poaceae
|
| TRACH2 | Trachypogon Nees | crinkleawn grass | Poaceae
|
| TRNI6 | Trachypus nigrescens (Hedw.) Mitt. | Papillaria nigrescens | Meteoriaceae
|
| TRAM13 | Trachyspermum ammi (L.) Sprague ex Turrill | Trachyspermum copticum | Apiaceae
|
| TRCO15 | Trachyspermum copticum (L.) Link | Ajowan caraway | Apiaceae
|
| TRACH3 | Trachyspermum Link | Ajowan caraway | Apiaceae
|
| TRHE5 | Trachyxiphium heteroicum (Card.) Buck | trachyxiphium moss | Callicostaceae
|
| TRACH6 | Trachyxiphium Buck | trachyxiphium moss | Callicostaceae
|
| TRAN11 | Tracyanthus angustifolius (Michx.) Small | Zigadenus densus | Liliaceae
|
| TRRO | Tracyina rostrata Blake | Indian headdress | Asteraceae
|
| TRACY | Tracyina Blake | Indian headdress | Asteraceae
|
| TRFL10 | Tradescantella floridana (S. Wats.) Small | Callisia cordifolia | Commelinaceae
|
| TRAL9 | Tradescantia albiflora Kunth | Tradescantia fluminensis | Commelinaceae
|
| TRAN15 | Tradescantia �andersoniana W. Ludwig & Rohweder | | Commelinaceae
|
| TRAN12 | Tradescantia anomala Torr. | Tinantia anomala | Commelinaceae
|
| TRAU6 | Tradescantia australis Bush | Tradescantia hirsutiflora | Commelinaceae
|
| TRBR | Tradescantia bracteata Small ex Britt. | longbract spiderwort | Commelinaceae
|
| TRBR8 | Tradescantia brevicaulis Raf. | Tradescantia virginiana | Commelinaceae
|
| TRBR6 | Tradescantia brevifolia (Torr.) Rose | TransPecos spiderwort | Commelinaceae
|
| TRBU2 | Tradescantia buckleyi (I.M. Johnston) D.R. Hunt | Buckley's spiderwort | Commelinaceae
|
| TRCA19 | Tradescantia canaliculata Raf. | Tradescantia ohiensis | Commelinaceae
|
| TRCO12 | Tradescantia congesta (Moench) D. Don | Tradescantia virginiana | Commelinaceae
|
| TRCO9 | Tradescantia cordifolia Sw. | Callisia cordifolia | Commelinaceae
|
| TRCR13 | Tradescantia crassifolia Cav. | leatherleaf spiderwort | Commelinaceae
|
| TRCR6 | Tradescantia crassula Link & Otto | succulent spiderwort | Commelinaceae
|
| TRDI4 | Tradescantia �diffusa Bush (pro sp.) | | Commelinaceae
|
| TRDI11 | Tradescantia discolor L'H�r. | Tradescantia spathacea | Commelinaceae
|
| TRDI8 | Tradescantia discolor Raf., non L'H�r. | Tradescantia hirsutiflora | Commelinaceae
|
| TRED | Tradescantia edwardsiana Tharp | plateau spiderwort | Commelinaceae
|
| TREG3 | Tradescantia eglandulosa Bush | Tradescantia hirsutiflora | Commelinaceae
|
| TREL3 | Tradescantia elongata G.F.W. Mey. | Tripogandra serrulata | Commelinaceae
|
| TRER4 | Tradescantia ernestiana E.S. Anderson & Woods. | Ernest's spiderwort | Commelinaceae
|
| TRFL | Tradescantia fluminensis Vell. | small-leaf spiderwort | Commelinaceae
|
| TRFO2 | Tradescantia foliosa Small | Tradescantia ohiensis | Commelinaceae
|
| TRGE2 | Tradescantia geniculata Jacq. | Gibasis geniculata | Commelinaceae
|
| TRGI | Tradescantia gigantea Rose | giant spiderwort | Commelinaceae
|
| TRHI5 | Tradescantia hirsuticaulis Small | hairystem spiderwort | Commelinaceae
|
| TRHI | Tradescantia hirsutiflora Bush | hairyflower spiderwort | Commelinaceae
|
| TRHU | Tradescantia humilis Rose | Texas spiderwort | Commelinaceae
|
| TRIN10 | Tradescantia incarnata Small | Tradescantia ohiensis | Commelinaceae
|
| TRLEB | Tradescantia leiandra Torr. var. brevifolia Torr. | Tradescantia brevifolia | Commelinaceae
|
| TRLEG | Tradescantia leiandra Torr. var. glandulosa (Correll) Gandhi | canyon spiderwort | Commelinaceae
|
| TRLEL | Tradescantia leiandra Torr. var. leiandra | canyon spiderwort | Commelinaceae
|
| TRLE5 | Tradescantia leiandra Torr. | canyon spiderwort | Commelinaceae
|
| TRLO5 | Tradescantia longifolia Small | Tradescantia roseolens | Commelinaceae
|
| TRLO2 | Tradescantia longipes E.S. Anderson & Woods. | wild crocus | Commelinaceae
|
| TRMI | Tradescantia micrantha Torr. | Callisia micrantha | Commelinaceae
|
| TRMO8 | Tradescantia monandra Sw. | Callisia monandra | Commelinaceae
|
| TRMO13 | Tradescantia montana Shuttlw. ex Britt. | Tradescantia subaspera var. montana | Commelinaceae
|
| TROCM | Tradescantia occidentalis (Britt.) Smyth var. melanthera MacRoberts | prairie spiderwort | Commelinaceae
|
| TROCO | Tradescantia occidentalis (Britt.) Smyth var. occidentalis | prairie spiderwort | Commelinaceae
|
| TROCS | Tradescantia occidentalis (Britt.) Smyth var. scopulorum (Rose) E.S. Anderson & Woods. | prairie spiderwort | Commelinaceae
|
| TROCT | Tradescantia occidentalis (Britt.) Smyth var. typica E.S. Anderson & Woods. | Tradescantia occidentalis var. occidentalis | Commelinaceae
|
| TROC | Tradescantia occidentalis (Britt.) Smyth | prairie spiderwort | Commelinaceae
|
| TROHF | Tradescantia ohiensis Raf. var. foliosa (Small) MacRoberts | Tradescantia ohiensis | Commelinaceae
|
| TROHP | Tradescantia ohiensis Raf. var. paludosa (E.S. Anderson & Woods.) MacRoberts | Tradescantia paludosa | Commelinaceae
|
| TROH | Tradescantia ohiensis Raf. | bluejacket | Commelinaceae
|
| TROZ | Tradescantia ozarkana E.S. Anderson & Woods. | Ozark spiderwort | Commelinaceae
|
| TRPA10 | Tradescantia pallida (Rose) D.R. Hunt | purple queen | Commelinaceae
|
| TRPA8 | Tradescantia paludosa E.S. Anderson & Woods. | confederate spiderwort | Commelinaceae
|
| TRPE9 | Tradescantia pedicellata Celarier | Edwards Plateau spiderwort | Commelinaceae
|
| TRPE16 | Tradescantia pendula (Schinz) D.R. Hunt | Tradescantia zebrina | Commelinaceae
|
| TRPI8 | Tradescantia pilosa Lehm. | Tradescantia subaspera var. subaspera | Commelinaceae
|
| TRPI | Tradescantia pinetorum Greene | pinewoods spiderwort | Commelinaceae
|
| TRRE7 | Tradescantia reflexa Raf. | Tradescantia ohiensis | Commelinaceae
|
| TRRE | Tradescantia reverchonii Bush | Reverchon's spiderwort | Commelinaceae
|
| TRROG2 | Tradescantia rosea Vent. var. graminea (Small) E.S. Anderson & Woods. | Callisia graminea | Commelinaceae
|
| TRROO | Tradescantia rosea Vent. var. ornata (Small) E.S. Anderson & Woods. | Callisia ornata | Commelinaceae
|
| TRRO8 | Tradescantia rosea Vent. | Callisia rosea | Commelinaceae
|
| TRRO4 | Tradescantia roseolens Small | longleaf spiderwort | Commelinaceae
|
| TRRU6 | Tradescantia rupestris Raf. | Tradescantia virginiana | Commelinaceae
|
| TRSC4 | Tradescantia scopulorum Rose | Tradescantia occidentalis var. scopulorum | Commelinaceae
|
| TRSP8 | Tradescantia spathacea Sw. | boatlily | Commelinaceae
|
| TRSP7 | Tradescantia speciosa Salisb. | Tradescantia virginiana | Commelinaceae
|
| TRSU | Tradescantia subacaulis Bush | stemless spiderwort | Commelinaceae
|
| TRSUM | Tradescantia subaspera Ker-Gawl. var. montana (Shuttlw. ex Britt.) E.S. Anderson & Woods. | zigzag spiderwort | Commelinaceae
|
| TRSUS | Tradescantia subaspera Ker-Gawl. var. subaspera | zigzag spiderwort | Commelinaceae
|
| TRSUT | Tradescantia subaspera Ker-Gawl. var. typica E.S. Anderson & Woods. | Tradescantia subaspera var. subaspera | Commelinaceae
|
| TRSU2 | Tradescantia subaspera Ker-Gawl. | zigzag spiderwort | Commelinaceae
|
| TRTE6 | Tradescantia texana Bush | Tradescantia subacaulis | Commelinaceae
|
| TRTH | Tradescantia tharpii E.S. Anderson & Woods. | Tharp's spiderwort | Commelinaceae
|
| TRVIA | Tradescantia virginiana L. var. alba Hook. ex Raf. | Tradescantia virginiana | Commelinaceae
|
| TRVIB | Tradescantia virginiana L. var. barbata Raf. | Tradescantia virginiana | Commelinaceae
|
| TRVI | Tradescantia virginiana L. | Virginia spiderwort | Commelinaceae
|
| TRWRG | Tradescantia wrightii Rose & Bush var. glandulopubescens B.L. Turner | Wright's spiderwort | Commelinaceae
|
| TRWRW | Tradescantia wrightii Rose & Bush var. wrightii | Wright's spiderwort | Commelinaceae
|
| TRWR | Tradescantia wrightii Rose & Bush | Wright's spiderwort | Commelinaceae
|
| TRZA | Tradescantia zanonia (L.) Sw. | cohitre blanco | Commelinaceae
|
| TRZE | Tradescantia zebrina hort. ex Bosse | inchplant | Commelinaceae
|
| TRADE | Tradescantia L. | spiderwort | Commelinaceae
|
| TRAM9 | Tragia amblyodonta (Muell.-Arg.) Pax & K. Hoffmann | dogtooth noseburn | Euphorbiaceae
|
| TRAN8 | Tragia angustifolia Nutt. | Tragia ramosa | Euphorbiaceae
|
| TRBE4 | Tragia betonicifolia Nutt. | betonyleaf noseburn | Euphorbiaceae
|
| TRBR4 | Tragia brevispica Engelm. & Gray | shortspike noseburn | Euphorbiaceae
|
| TRCO | Tragia cordata Michx. | heartleaf noseburn | Euphorbiaceae
|