| Name | Pentaphragma integrifolium var. longipetiolata Merrill |
| Authorship | Merrill |
| Rank | Variety |
| Placed in | Pentaphragma integrifolium Merrill |
| Citation | 1933 Pap. Michigan Acad. Sci. 19: 203 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pentaphragma integrifolium var. longipetiolata Merrill |
| Identification made in | 2015 (1) |
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