| Name | Cylindrospermum macrospermum Kützing ex A. B. Frank |
| Authorship | Kützing ex A. B. Frank |
| Rank | Species |
| Placed in | Cylindrospermum Kützing ex Bornet & Flahault |
| Citation | 1886 Syn. Pflanzenk. (ed. 3) 3: 222 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cylindrospermum macrospermum Kützing ex A. B. Frank |
| Identification made in | [no date] (1) |