| Name | Mortonia greggii A. Gray |
| Authorship | A. Gray |
| Rank | Species |
| Placed in | Mortonia |
| Citation | 1852 Smithsonian Contr. Knowl. 3(5): 35 |
| Holdings | 19 Specimens held in the Harvard University Herbaria identified as Mortonia greggii A. Gray |
| Identification made in | [no date] (10), 1939 (2), 2014 (3), 2016 (3), 2018 (1) |