Trifolium variegatum Torr. & A.Gray
| Observations on plants and insects in north-western Baja California, Mexico, with descriptions of new bees (1941) Transactions of The San Diego Society For Natural History 9: 337-352 | |
| Utah flora: Fabaceae (Leguminosae) S L Welsh (1978) Great Basin Naturalist 38: 225-367 |