| Name | Microsphaera sparsa Howe |
| Authorship | Howe |
| Rank | Species |
| Placed in | Microsphaera Léveillé |
| Citation | 1872 J. Bot. 10: 171 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Microsphaera sparsa Howe |
| Identification made in | [no date] (1), 1982 (5), 1984 (1), 1985 (2), 1987 (1) |
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