| Species | Plant part | Coumarins | References |
| T. casaretti | wood | scopoletin (288) | |
| T. elegans | seeds | scopoletin (288) | |
| scoparone (289) | |||
| umbelliferone (290) | |||
| T. estipulata | stem | scopoletin (288) | |
| isofraxidin (291) | |||
| T. lepidota | stem | scopoletin (288) |