| Name | Neosiphonia harveyi var. olneyi (Harvey) A. C.Mathieson & Dawes |
| Authorship | (Harvey) A. C.Mathieson & Dawes |
| Rank | Variety |
| Placed in | Neosiphonia harveyi (Bailey) M.-S. Kim, H.-G. Choi, Guiry & G. W. Saunders |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Neosiphonia harveyi var. olneyi (Harvey) A. C.Mathieson & Dawes |
| Identification made in | [no date] (7), 2018 (1) |