Tattered Medick 
Tephrosia apollinea 
Tephrosia nubica 
Texas Bluebonnet 
Texas Mountain Laurel 
Thermopsis dolichocarpa 
Thin-leaf wattle 
Three-nerved bush-pea 
Tigers claw 
Tiny vetch 
Tomcat clover 
Trailing Fuzzy-Bean 
Trailing Restharrow 
Tree Medick 
Trifolium acaule 
Trifolium billardieri 
Trifolium clusii 
Trifolium clypeatum 
Trifolium dichroanthum 
Trifolium eriosphaerum 
Trifolium glanduliferum 
Trifolium israeliticum 
Trifolium leucanthum 
Trifolium lupinaster