| Name | Anthoceros carolinianus var. occidentalis M. Howe |
| Authorship | M. Howe |
| Rank | Variety |
| Placed in | Anthoceros carolinianus Michaux |
| Citation | 1898 Bull. Torrey Bot. Club 25: 8 |
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| Name | Anthoceros carolinianus var. occidentalis M. Howe |
| Authorship | M. Howe |
| Rank | Variety |
| Placed in | Anthoceros carolinianus Michaux |
| Citation | 1898 Bull. Torrey Bot. Club 25: 8 |