| Trifolium agrarium L. | Trifolium aureum Pollich | | | Trifolium agrarium L. | Trifolium aureum Pollich | 40160 | 101725 |
| Trifolium billardierei Spreng. | | a | | Trifolium billardierei Spreng. | | 40180 | |
| Trifolium boissieri Guss. ex Soy.-Will. & Godr. | | a | | Trifolium boissieri Guss. ex Soy.-Will. & Godr. | | 40184 | |
| Trifolium campestre Schreb. | | a | | Trifolium campestre Schreb. | | 40189 | |
| Trifolium comosum Labill. | Trifolium billardierei Spreng. | | | Trifolium comosum Labill. | Trifolium billardierei Spreng. | 40200 | 40180 |
| Trifolium dolopium Heldr. & Hausskn. ex Gibelli & Belli | | a | | Trifolium dolopium Heldr. & Hausskn. ex Gibelli & Belli | | 40218 | |
| Trifolium dubium Sibth. | | a | | Trifolium dubium Sibth. | | 40219 | |
| Trifolium filiforme L. | Trifolium micranthum Viv. | | | Trifolium filiforme L. | Trifolium micranthum Viv. | 40227 | 40293 |
| Trifolium filiforme L. var. dubium (Sibth.) Fiori | Trifolium dubium Sibth. | | i | Trifolium filiforme L. var.dubium (Sibth.) Fiori | Trifolium dubium Sibth. | 40228 | 40219 |
| Trifolium micranthum Viv. | | a | | Trifolium micranthum Viv. | | 40293 | |
| Trifolium patens Schreb. | | a | | Trifolium patens Schreb. | | 40319 | |
| Trifolium philistaeum Zohary | | a | | Trifolium philistaeum Zohary | | 40325 | |
| Trifolium rytidosemium Boiss. & Hohen. | Trifolium badium Schreb. | | | Trifolium rytidosemium Boiss. & Hohen. | Trifolium badium Schreb. | 40357 | 70789 |
| Trifolium spadiceum L. | | a | | Trifolium spadiceum L. | | 40368 | |
| Trifolium speciosum Willd. | Trifolium grandiflorum Schreb. | | | Trifolium speciosum Willd. | Trifolium grandiflorum Schreb. | 40369 | 101724 |
| Trifolium stenophyllum Boiss. | Trifolium philistaeum Zohary | | | Trifolium stenophyllum Boiss. | Trifolium philistaeum Zohary | 40373 | 40325 |
| Trifolium strepens Crantz | Trifolium aureum Pollich | | | Trifolium strepens Crantz | Trifolium aureum Pollich | 40376 | 101725 |
| Trifolium badium Schreb. | | a | | Trifolium badium Schreb. | | 70789 | |
| Trifolium grandiflorum Schreb. | | a | | Trifolium grandiflorum Schreb. | | 101724 | |
| Trifolium aureum Pollich | | a | | Trifolium aureum Pollich | | 101725 | |
| Trifolium minus Sm. | Trifolium dubium Sibth. | | | Trifolium minus Sm. | Trifolium dubium Sibth. | 313122 | 40219 |
| Trifolium parviflorum Bunge ex Nyman | Trifolium dubium Sibth. | | | Trifolium parviflorum Bunge ex Nyman | Trifolium dubium Sibth. | 313241 | 40219 |
| Trifolium lineare Greene, nom. inval. | Trifolium philistaeum Zohary | | | Trifolium lineare Greene, nom. inval. | Trifolium philistaeum Zohary | 319712 | 40325 |
| Trifolium procumbens L. | Trifolium campestre Schreb. | | | Trifolium procumbens L. | Trifolium campestre Schreb. | 404960 | 40189 |
| Trifolium campestre Schreb. var. minus (W. D. J. Koch) Kozuharov | | a | i | Trifolium campestre Schreb. var.minus (W. D. J. Koch) Kozuharov | | 408363 | |
| Trifolium procumbens L. var. minus W. D. J. Koch | Trifolium campestre Schreb. var. minus (W. D. J. Koch) Kozuharov | | i | Trifolium procumbens L. var.minus W. D. J. Koch | Trifolium campestre Schreb. var.minus (W. D. J. Koch) Kozuharov | 408364 | 408363 |
| Trifolium campestre Schreb. var. campestre | | a | i | Trifolium campestre Schreb. var.campestre | | 408365 | |
| Trifolium brutium Ten. | | a | | Trifolium brutium Ten. | | 412526 | |
| Trifolium erubescens Fenzl | | a | | Trifolium erubescens Fenzl | | 412527 | |
| Trifolium velenovskyi Vandas | | a | | Trifolium velenovskyi Vandas | | 412535 | |
| Trifolium sebastianii Savi | | a | | Trifolium sebastianii Savi | | 423732 | |
| Trifolium sintenisii Freyn | | a | | Trifolium sintenisii Freyn | | 423738 | |
| Trifolium aurantiacum Boiss. & Spruner | Trifolium brutium Ten. | | | Trifolium aurantiacum Boiss. & Spruner | Trifolium brutium Ten. | 427479 | 412526 |
| Trifolium mesogitanum Boiss. | Trifolium brutium Ten. | | | Trifolium mesogitanum Boiss. | Trifolium brutium Ten. | 427482 | 412526 |
| Trifolium aureum Pollich subsp. aureum | | a | i | Trifolium aureum Pollich subsp. aureum | | 437372 | |
| Trifolium violaceum Davidov | Trifolium grandiflorum Schreb. | | | Trifolium violaceum Davidov | Trifolium grandiflorum Schreb. | 438011 | 101724 |
| Trifolium aureum Pollich subsp. barbulatum Freyn & Sint. | | a | i | Trifolium aureum Pollich subsp. barbulatum Freyn & Sint. | | 447098 | |
| Trifolium badium Schreb. subsp. rytidosemium (Boiss. & Hohen.) M. Hossain | Trifolium badium Schreb. | | i | Trifolium badium Schreb. subsp. rytidosemium (Boiss. & Hohen.) M. Hossain | Trifolium badium Schreb. | 447470 | 70789 |
| Trifolium karatavicum Pavlov | Trifolium campestre Schreb. | | | Trifolium karatavicum Pavlov | Trifolium campestre Schreb. | 451366 | 40189 |
| Trifolium phitosianum N. Böhling et al. | | a | | Trifolium phitosianum N. Böhling et al. | | 452499 | |
| Trifolium praetermissum Greuter et al. | | a | | Trifolium praetermissum Greuter et al. | | 452500 | |
| Trifolium badium Schreb. subsp. badium | Trifolium badium Schreb. | | i | Trifolium badium Schreb. subsp. badium | Trifolium badium Schreb. | 483652 | 70789 |
| Trifolium procumbens L. var. procumbens | Trifolium campestre Schreb. | | i | Trifolium procumbens L. var.procumbens | Trifolium campestre Schreb. | 483673 | 40189 |