| Tridens albescens (Vasey) Wooton & Stand. |
Accepted |
30 |
| Tridens ambiguus (Elliott) Schult. |
Accepted |
20 |
| Tridens buckleyanus (Dewey) Nash |
Accepted |
20 |
| Tridens eragrostoides (Vasey & Scribn.) Nash |
Accepted |
20 |
| Tridens flavus (L.) Hitchc. |
Accepted |
20 |
| Tridens muticus (Torr.) Nash |
Accepted |
20 |
| Tridens strictus (Nutt.) Nash |
Accepted |
20 |
| Tridens texanus (S. Watson) Nash |
Accepted |
20 |
| Tridens avenaceus (Kunth) Hitchc. |
Synonym of Erioneuron avenaceum (Humb. & Bonpl. & Kunth) Tateoka |
16 |
| Tridens nealleyi (Vasey) Wooton & Stand. |
Synonym of Erioneuron avenaceum var. nealleyi (Vasey) Gould |
8 |
| Tridens pulchellus (Kunth) Hitchc. |
Synonym of Erioneuron pulchellum (Kunth) Tateoka |
8 |
| Tridens elongatus (Buckley) Nash |
Synonym of Tridens muticus (Torr.) Nash |
20 |
| Tridens muticus var. elongatus (Buckley) Shinners |
Synonym of Tridens muticus (Torr.) Nash |
20 |
| Tridens pilosus (A. Heller) Hitchc. |
Synonym of Tridens muticus (Torr.) Nash |
20 |
| Triodia elongata (Buckley) Scribn. |
Synonym of Tridens muticus (Torr.) Nash |
20 |
| Triodia texana S. Watson |
Synonym of Tridens texanus (S. Watson) Nash |
20 |