| Name | Philadelphus microphyllus subsp. pumilus (P. A. Rydberg) C. L. Hitchcock |
| Authorship | (P. A. Rydberg) C. L. Hitchcock |
| Rank | Subspecies |
| Placed in | Philadelphus microphyllus A. Gray |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Philadelphus microphyllus subsp. pumilus (P. A. Rydberg) C. L. Hitchcock |
| Identification made in | [no date] (1) |
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