| Name | Calystegia occidentalis subsp. fulcrata (A. Gray) Brummitt |
| Authorship | (A. Gray) Brummitt |
| Rank | Subspecies |
| Placed in | Calystegia occidentalis (A. Gray) Brummitt |
| Holdings | 18 Specimens held in the Harvard University Herbaria identified as Calystegia occidentalis subsp. fulcrata (A. Gray) Brummitt |
| Identification made in | [no date] (17), 1996 (1) |
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