| Name | Asclepias longifolia Michaux |
| Authorship | Michaux |
| Rank | Species |
| Placed in | Asclepias Linnaeus |
| Holdings | 66 Specimens held in the Harvard University Herbaria identified as Asclepias longifolia Michaux |
| Identification made in | [no date] (63), 1987 (1), 2015 (2) |
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