| Name | Isoetes macrospora Durieu |
| Authorship | Durieu |
| Rank | Species |
| Placed in | Isoetes Linnaeus |
| Contains | Isoetes macrospora var. heterospora (A. A. Eaton) A. A. Eaton |
| Holdings | 48 Specimens held in the Harvard University Herbaria identified as Isoetes macrospora Durieu |
| Identification made in | [no date] (41), 1979 (7) |
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