| Name | Cystoclonium purpurascens var. cirrhosum Harvey |
| Authorship | Harvey |
| Rank | Variety |
| Placed in | Cystoclonium purpurascens (Hudson) Kützing |
| Citation | 1853 Nereis Bor.-Amer. 2: 170 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Cystoclonium purpurascens var. cirrhosum Harvey |
| Identification made in | [no date] (11) |
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