| Name | Roulinia unifaria (Scheele) Engelmann ex Torrey |
| Authorship | (Scheele) Engelmann ex Torrey |
| Rank | Species |
| Placed in | Roulinia Decaisne |
| Citation | 1859 Rep. U.S. Mex. Bound., Bot. 160 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Roulinia unifaria (Scheele) Engelmann ex Torrey |
| Identification made in | [no date] (1) |