| Name | Calystegia macrostegia subsp. amplissima Brummitt |
| Authorship | Brummitt |
| Rank | Subspecies |
| Placed in | Calystegia macrostegia (Greene) Brummitt |
| GUID | urn:lsid:ipni.org:names:43569-2 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Calystegia macrostegia subsp. amplissima Brummitt |
| Identification made in | 1996 (1) |
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