| Name | Achnatherum occidentale subsp. californicum (Burtt Davy & Merrill) Barkworth |
| Authorship | (Burtt Davy & Merrill) Barkworth |
| Rank | Subspecies |
| Placed in | Achnatherum occidentale (Thurber ex S. Watson) Barkworth |
| Holdings | 16 Specimens held in the Harvard University Herbaria identified as Achnatherum occidentale subsp. californicum (Burtt Davy & Merrill) Barkworth |
| Identification made in | [no date] (16) |
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