Subject
- Specific Epithet: tenerrimum 14
- Specific Epithet: tenerum 10
- Specific Epithet: tenuirostre 22
- Specific Epithet: tenuirostris 31
- Specific Epithet: tenuis 1
- Specific Epithet: teres 5
- Specific Epithet: texanus 18
- Specific Epithet: thomsonii 4
- Specific Epithet: toccoae 2
- Specific Epithet: tomentella 3
- Specific Epithet: tortuosa 6
- Specific Epithet: trichomanis 2
- Specific Epithet: trichomanoides 1
- Specific Epithet: trichomitria 18
- Specific Epithet: trichophyllum 3
- Specific Epithet: trichopodium 5
- Specific Epithet: tricrenata 1
- Specific Epithet: trifarium 1
- Specific Epithet: trilobata 7
- Specific Epithet: triquetra 2